keeping a straight seam over multiple layers?
I'm working on a pattern that involves two flying geese units sewn together point to point (so like this >< ) and I'm having the worst time keeping my seam straight as I sew over the spot where those points come together and it goes from two layers of fabric to four. No matter how slowly and carefully I sew, it always seems to shift a little and that part of the seam turns out a little off. I've developed a close, personal relationship with my seam ripper and a rich vocabulary of swear words because of this. Any suggestions on how to make it turn out right?