Couple of things:
Waist could do with widening a tad, looks just a bit too thin at the mo
the sleaves wrinkles don't seem to fall the way you'd expect them too, they look like they're made from a much heavy material than what pirate's garb usually appears as.
Is Penelope Cruz's character in "on stranger tides" one of your references? i'm getting that kind of vibe from the over-all appearance.
I must say i really like the gun holster setup