My first attempt on mecha-like drawing

What I really need for help is, I cant figure out the char's left hand. Though its still sketchy, I found it hard to use the same hand design as the right one. Can anybody help? If you guys can point out other problems it'll be nice but I really need help on the left hand.

I know the face is anime-like, coz I cant draw robot heads properly. And this one is done with a reference, that is my own gundam so forgive me if it looks like gundam lol.

p/s: did my artwork improves any bit?