I love Mariners compass and am currently working on one myself! Your's is a beauty. Lovely job.
What technique did you use? I use Judy Mathieson's way with freezer PP where you don't stitch over the freezer paper but preforate (sp?) it and then fold it back and stitch right next to it. I love this method as no ripping off of paper is involved and you can reuse the same pattern piece several times before it stops sticking to the fabric.