To all the experienced knitters out there, I have a small plea for help. What can I do to a top that is looking rather shapeless. I finished my Prairie Tunic which was a fairly easy knit. The problem I have is that it has no waist shaping whatsoever. So I look like I have a big tummy on me. How can I add some shaping to the waist? Can I sew in some shaping? I'm not sure I want to rip out the whole thing. What can I do???