i have been making a lot of 6 point stars & hexies lately. After trying many different methods here is my simplest:
Attach 2 sides to center piece on both sides. Seam fabric (back) naturally go out, almost like doing flying geese on back, tips should match. do second half same way. Sew 2 halves. Now press center seam open. Point fabricis evenly distributed and not a lot of pressing.