The head looks good, the body needs a whole lot of work though.
It would help if you post a wire, but asfar i can see it, the polycount is to high to manually tweak it, so it's lower the polycount and manually tweak it or make use of the artisantool .
And before you go any further i would google for images on humananatomy.

It's anice concept though and it will be sweet when made properly