I'm going to watch this thread, since I'm wondering the same thing, because I want to start making better fitted garments. The ones I made thus far look _almost_ good, but they all have small quirks that I'd like to figure out how to avoid.

I recently bought Amy Herzog's Ultimate Sweater Book, since it has a section on Adjustments that helps a bit. I'm also wondering if her Fit to Flatter book is useful for this (I know what I like, I just don't know how to get the math to work) - I'll probably try to find it in a library and only buy it if it looks like it _is_ useful.