OMG! I finally managed to paint a large picture completely with a computer program (OpenCanvas) Q___Q that's enough for a couple of months until I start again with a PC XDD
Oh yeah, the anatomy of Zen is weird <.
By the way, these are the characters from an RPG in which I play. Here are the names from left to right: Ziya, Pirika, Zen, Daiki (my chara X3)