This is a QGD Game i played recently. I looked like a draw, but then white becomes greedy and give me a chance to win the game by sacrificing a rook and a pawn for the initiative in the ending.

Many mistakes by both sides...

 

But your rook sacrifice was definitely amazing! 

You recognize on move 12 that you have more kingside space, but then on move 13, you don't build this advantage. I think 13. ... f5 intending to play ... f4 next is much better than 13. ... Nf6.

 

I like 26. ... Rxe3, simply taking the piece outright. White cannot take the rook because black would pin the queen with Bxd4. 

Good advices, thanks loomis!. Your comments are always welcome!!!

I don't see how the position after 47 was a draw.  It still looks like a clear victory for you.