Shading 2nd skin

Totally forgot!   Worked on second skin last Saturday.  Lesson:  practice shading. Some of the dark spots in the blank spaces are where the advisor was teaching me.  How do you like the shading on the tree trunk? :)  Or wings?  Didn't have time to finish the yin yang, the needle was too small and would have taken a long time.  Would have liked to add some shading to the snail branch, too.  Fun!  Can't wait for coloring. Can't wait for the real thing!