I've been meaning to make one for a long time especially during those times when a lot of people still whitewash arts.
But I forgot to include useful SAI tricks here. :v
like for one, you can easily alter colors by layer by adjusting certain bars in the Filter>>Hue and Saturation tab.
Anyway. this was done as request of anons in tumblr and if you think I should do another, please comment and specify which program (or medium) and part I should do and I'll consider it.
Also, like I said I'm also new with digital arts so this method of mine ias still experimental and subject to change.