Looking good dude, the hands are a little large but I like where your headed. So for me I can't sit still with one medium and always jump around to different materials. I had the best luck with sculpting small hands with green stuff, then gluing/pinning them onto the mini. You shouldn't need a wire armature for something that small. If you did use an armature I would say just a little straight piece pinned into the sculpty to do the arm and hand.