Okay, so I decided to make this tunic with this gauze fabric and I got everything together the basic construction was no problem after I got the pattern to fit right. The next step is to put the collar in, I was supposed to us lightweight fusible interfacing but its something that I never used before and because of the type of fabric I used I decided to skip that part. The fabric stretches out of shape very easily so I didn't want to iron it or do anything else that would make my final result come out funky(bad funky not good funky). I got the collar facing sewn in and turned on the right side now I have to sew it down but it keeps moving and stretching out and now I'm stuck. Maybe I should've used that interfacing.
Any suggestions on how to make it stay still so I can sew it down and do my topstitching? Heres a pic of what the final result is supposed to look like. It just had rows of topstiching around the collar and cuffs i'm gonna skip the cuffs though.