if you use photoshop, use the guides. and "snap to guides" is sometimes a pain, but for straight up/down or diagonal lines, this really helps. also, with some clothing items, i prefer a cylindrical uvmap as opposed to a planar map. with cylindrical, there is one seam, usually in the back (and that's at least realistic, right?)... the texture may "smear" just a wee along the hip area, but nothing really bad. just looks like stretched material.