This is basically a page detailing how each page of IA is produced, step by step. I actually timed myself to see how long it took to finish one page. This is not meant so much as a "how to" guide for making your own comic as just a short explanation of how *I* do it.. I think you'd be pretty foolish trying to imitate IA. XD (Sorry for the amount of emoticons in this. It's late and I'm tired.)
Step 1: Scripting. Planning out pages takes me forever. I'm definitely not one of those webcomic artists who can throw a page together from scratch week-to-week; I tend to plan out a couple scenes in advance and go from there. To do this, I just write down everything I need to happen and try to break that down into sizable chunks - sometimes I put too much or too little on a page, though, and have to move things around to accomodate. (For instance, page 22 - the 'porn page' - was originally just going to be the one panel of Sevrin passing out. At the last minute, I decided to do a full page of his imagination running wild.)

This page is pretty simple; not much happens. I generally write out the script mostly in dialogue and expressions or actions, rather than story or full script form. Sometimes I'll add a little bit more emotion, like in line three. I break all the action and dialogue down into a series of numbered events representing panels. I tend to do a sucky job guessing what's going to fit in one panel, though, and often have to change the plan while I'm drawing.
Time Spent: Variable.
Step 2: Layout Planning. Now that I've got a script, I can do a quick doodle of the way I want the page to flow. All I worry about, really, is making everything fit, but I also try to stay mindful of that rule "The more space allotted to a panel, the more importance it holds." I tend to scribble these little layout-doodles on anything; a scrap of paper, an index card, whatever's handy.

For this page, I want the first panel - Ghost restraining Fennel - to be small, since it's not important, and then I want a big image of Foxglove as he walks in (since he hasn't been around for ages and I'm anxious to draw him again!). The panels are numbered the same way as they are in the script to form an easy reference for myself as I begin the page.
Time Spent: 2 minutes.
Step 3: Start the Page. Now I actually grab some paper (up until a couple pages ago I had been using regular ol' computer paper; these days, I use card stock) and get going. I prefer to get the whole layout over and done with, so I don't have to grab my ruler halfway through and so I get a general idea of the composition of the page. I can also fix layouting problems before they become too disastrous (usually, anyway).

As you can see, the layout has already changed from the quick doodle I did earlier. Sometimes I actually move things around after I've started drawing, if I realise something will look awkward or might not fit. In this case, I've decided to allow for even more room for the shot of shirtless!Fox (colour me guilty of fan service in the first degree), and more space for the Ghost/Fox pic at the bottom.
Time Spent: 10-15 minutes.
Step 4: Drawing. This is basically filling in the boxes. I tend to draw a little bit at a time and then take a break; for instance, work on one panel, watch some TV, finish that panel, surf around online, etc. I find if I try to draw too much at once it either looks amazing when I'm done (very rare) or, in most cases, I totally fizzle out and things just start looking wonky. XD (You can click this picture for the sketch of the full page.)

A lot of times I run into the problem of not being able to draw what I have scripted. For this page, the tiny little "Kitty Pounce!" doodle gave me the most trouble. Pouncing is much trickier than you would think. I'm also finding it difficult to draw Fox after taking such a long break from him. A lot of times, once I think a page is completed and ready to be inked, I'll let it sit overnight and see what I think in the morning. This usually leads to me erasing and redrawing bits or fixing things that just look weird. You can usually tell when I skip this stage and go straight to inking. XD;;
Time Spent: Approx. 4 hours (not including breaks).
Step 5: Inking. I actually break inking down into three steps. First, I basically just go over all the lines with a medium-sized pentip (usually .30 or .35). Next, I erase all the pencil lines (and occassionally have to fix bits I've missed by mistake). Finally, I add all the detail to the inking - the varying line widths and all that stuff that brings the art to life instead of looking flat and not-dynamic and all that. All three thumbnails below link to the full-size version.

I tend to make a lot of mistakes when inking, which I then fix on the computer or with a milky gel pen. Or, if they're going to be "hidden" by colouring, I just ignore them. I have never managed to master that light, free manga-style of lineart; instead, anything I do looks solid and cartoony. Oh well, it's a bit more original, I guess?
Time Spent: 1.5-2 hours.
Step 6: Colouring. This bit is not normally very exciting. I use Prismacolor Art Markers and just.. well, colour. I actually add shadows and such to everything, though I'm afraid most of that seems to get lost in the scanning. Friends who I've mailed art to have commented on how much more detail there is in real life. Oh well. XD

I hate it when colouring makes thing look different - for instance, Foxglove's expression in the top panel, to me, looks much better than the coloured version. But alas, I have also not mastered the techniques of manga colouring, so you are stuck with my bizarre block colouring. Think of it as greyscale cel art?
Time Spent: 1.5-2 hours.
Step 7: Photoshopping. This has two components: adding backgrounds and adding text. Adding backgrounds is more interesting (and more difficult, usually), but they're both surprisingly time consuming. I honestly do prefer drawing backgrounds, but as this scene is in a cave I've basically given up on that idea, and I've been using various filters on photos of cave interiors (yay for google imagesearch!). The backgrounds on this page are rather simple but I think they turned out alright, other than the fact that there isn't enough contrast on the page as a whole and everything looks grey.

The last step, usually, is adding sound effects and text and speech bubbles and all that. I hate speech bubbles. A lot. I do have a brush for them in Photoshop, but I have yet to make Photoshop bend to my will and so instead make my own in Paint Shop. It sucks. For this page, I decided to imitate the squiggly type speech bubbles I had in the sketch for the top panel, which I think worked nicely.
Time Spent: Approx. 2 hours.
And there you have it! A finished IA page. (This page might have been a bad example, I think, since there's so little going on. Oops.) Total time spent? Approximately ten hours on every page, not including any breaks between steps. This means if I want to sit down and do a whole page in one day, it basically blows that entire day. (It also means were I to charge $50 for a full page of art, I'd be making less than minimum wage.. -_-) I'm very slow, I know. And this was a relatively simple page; some pages have taken me much, much longer.
In any case, there's my little "How It's Done" guide... Hope it was as exciting for you as it was for me!