So confused

I'm always so confused when these are due...and which sketch picture we're supposed to do. Apparently the one I thought that was due last week is due tomorrow? I have no idea. Anyway here are the two speed paints and 10 trees. This time I tried pencil and a way Inga told me to do trees and I'm not even sure its better than my ink trees but its way smudgier and messy. I think I'll stick with ink, I like the contour style better and its much cleaner. Also these are tree sketches...when I think sketches I'm thinking like 5~15 min but some people are spending like 40 on them @_@ what is a good time spent on a tree?