I like the start you have made. Things I possibly would address is the crotch for a start. I don't know if it's me but my eyes are just being draw to it (no jokes thank you). I think it might be a bit too bulky. The other thing is that I think the top half of his body could be a little top heavy when you look at the legs and the size of the head and helmet.

Like I said, apart from that it's looking good.