I think you should ban yourself from the cube tool
.
Really you can see that your progressing because each model is better than the last, but it's clear that you should practice more before trying a human model. Making a character mesh is damn difficult, and although box modelling characters is popular in Milkshape, it's not really the same thing - usually you'd take a single cube and cut and extrude into your character shape, nobody builds characters from boxes once they know the ins and outs of milkshape. Follow the tutorials for box modelling, you'll pick up a lot of tips for making all types of model.
Van-B
Put those fiery biscuits away!