I'd unfold the basemesh of the sweater, then paint the pattern in photoshop, and use that as a mask in Zbrush to give a solid base across the whole mesh.
Generally, a nice model. However, your cloth has a general weightlessness to it. It's not feeling as if it's really folding or unfolding in any of its creases. Ever.
any of you chaps have a link to that program that unfolds a 3d mesh on paper so that you can print it out, and assemble a little paper doll of your model?