Hey! I like the colorful figure with the shorts up there, really bright colors. I think the hands could be a bit stronger...the one of the right feels like its bending strangely, and the left one is too long in the 'palm' area?
For painting faces I might still suggest using reference if you want to study lighting...you havent done it wrong, its just a harder task than line drawing a face..or do it just in greys and no color. a few things such as the shape of his head and the left eye looking up too far take away from it...good effort and keep on going