Doodling in ZBrush is fine and I think you can push shapes around and use it as a tool to HELP you learn anatomy. I don't subscribe to the idea that you need to code in notepad for 9 years before you can graduate to the big boy toys. Sure you can learn anatomy and critical artistic skills by making low poly meshes but it…
I think the index looks good too but the top of fingernail needs brought foward quite a bit. Almost right to the end, maybe just a hair behind the next polys down. You need a palm pad at the base of the thumb. Bottom, the pad along outside of hand (pinky side) should come right out to the edge. It should curve out from…