Be Aware!!!!
With all those layers of fabric building up at the two points (2,3,4,6,7 and 8,9,11,12,13,14) it can get quite bulky.
I found the best way to deal with this is by sewing toward the point (rather than from) and sewing slowly when you get to it ...
Using a very hot iron to ensure a super flat seam and all will be ok!