I got the impression that people have problems with circles. (Maybe that was projection, lol!) I found this while I was wandering around the net. Its a technique to make circles for applique, but you could also use it to make curves, if you have problems with them, like the Piece-lique link I showed before. Anyway, here it is:
http://sewinlovewithfabric.blogspot....-kratovil.html