Doodles and Finished Pieces

[Chutzpar]

Oh, something else I thought of (and sorry for the double post)--

Notice how the shading on the bottom one suggests a curved surface!
Looking at the chest and hair it seems you might already have some idea of this approach, but maybe you just kinda went on autopilot once you reached the legs. I'm pretty guilty of this too, you basically just need to slow down and think about how you're conveying something's shape with your shading.