You've got a nice strong chin, ford, and it helps a lot in making you look male. Judging from your clothes and pose in the final pic, I'm guessing you've got fairly masculine mannerisms, and those also help a lot in passing. Honestly, I think the only distinctly femme thing about you is what others have already mentioned -- your eyebrows.
And I'd describe your hair as more "adorably scruffy" than girly. :p