I basically make these like this: predraw them in photoshop first, divide the outlines into easy-to-count segments with a red 1pixel brush (for easy counting). Then put different colors on the different layers of shading to keep them seperated, I usually have a "basic shading" an "extra shading" and a "black" shading category. Once that's all done I do pixel counting for a couple hours and copy the drawing over by hand on the switch. (There's a guide SOMEWHERE on my Twitter lol)

It can be really tedious at times, but I refuse to use that program that copies the entire thing for you in a couple of minutes, I feel it's a bit cheaty.

Thank you!