How Do I Look: Step by Step

2022 update: Please note the submission date. This is a COMPLICATED way to do basic shadows!

I figured I would probably upload something like this. It's actually a really easy way to do stuff.

Details on step 3:
If you select the magic wand tool and highlight most of what you want, you get that stupid little space between your lineart and the selection area. You can get rid of that by clicking "select" then going down to "grow" or in some cases, "shrink." The boxes that appear on the pop up indicate how many pixels, ect. you want to add or take away around the boarder of your selection. As long as your colors are underneath your lineart, it shouldn't matter if you intersect with the lines at all.