Last week Dice Tsutsumi came and gave a talk at school. A student asked him his painting process and he replied something like "I paint at first with no light, and then turn them on one by one. key, fill, rim, skyfall, etc" This is also EXACTLY how Goro Fujita explained it just a year ago.
There must be something to this method, and I think I've strayed away from it. Here's a shot at it again.
Also, I got Mass Effect on the brain as you might notice.