Thank you, Guy, although I'm already regretting posting it. I'm still trying to coax this little guy out from the land of suck. They all do of course, right up until the moment they somehow don't, and this one hasn't quite finished cooking yet.
My biggest problem, I think (other than anatomy), is that my sculptures aren't very dynamic. I've only just started taking them from generic t-poses into asymmetrical action poses, and they all still look like they're posing for a picture, rather than a fortuitous capture of a dynamic moment in time. This guy is going right in the center of the piece, however, so I need to keep grinding until I can find a way to make him jump.
I already have Yama sculpted (although he'll need to be posed), so I figured why not take the leap and put together the kind of piece I've been working towards since starting off with all this. I can spend the next 90 days doing smaller projects or learning Maya, or I can bite the bullet and try to muscle my way through a big one. In the end, I think I'll be happier I went this way. I've got busts of the two kids coming along as well, so after I finish this guy I'll start on the hard surface environment stuff (which I think should be lots of fun, and less difficult than the organic), then some angry robots and I think a couple of brain-headed aliens in flying saucers.