So far the lower half of the body is far more successful than the upper half.
The reason for this is that you are less familiar with the forms, shapes and colors that are happening on the lower half, so you replicated the reference much more faithfully. On the upper half you saw an arm and said "Okay, I know how to draw an arm, I'll draw an arm", and you seem to have branched off and drawn it the way you think it should appear instead of the way it actually is. The best example might be the head - you duplicated the basic form but then you sort of filled in the blanks as far as lighting and texture go instead of continuing to study your source.
I'm not saying that it's good to always follow your source 100 percent of the time. But it IS important to be able to look at a reference and see clearly the shapes and colors that compose it, and understand why it works.
