michaelw, I have tried armature in blender on my girl project (second page I think) but there wer some nasty deformations going on. I gess if i retoped SuperMan it would work better, but that just to much work for me (I'm lazy). Any way I fixed few thing, and skin as you suggested. Here is final:
dog ROCK! ;D supy is pretty cool, too! I'm not so sure about the alien, while he has some neat details there's something off. I think the volume of the head could be larger. I'd inflate his brains by 1.5 or even twice as much, I believe. Other than that... a lot of excellence all over!
I think that's really great work so far but there are several things you might want to consider: -the eyes might be to close to each other but then again I don't know how they are on you reference... -the symmetry of the hair is destroying your work - if you remove it just around the center line it will look much cooler and much less like CG sculpt -remove the brush from the model when taking a screenshot