Looks good to me and I'm pretty sure a lot of players rated higher than you might overlook the pawn sac too
Pawn Sac
BTW check out the very last puzzle in this blog which you should appreciate
http://blog.chess.com/NimzoRoy/kp-endgames-with-multiple-pawns
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I thought this was a neat pawn sac. I could have done it earlier, but I did a stupid move (Bc2) in hopes that their king would move.
Perhaps it doesn't deserve an exclamation mark, but for a 1200 - 1300 rated person, I think it's a great move.