OTB vs. Capanegro

I played this game against chess.com player Capanegro and would really like to know what positions worked, what fell apart. When I asked nonothingnada where I went wrong he said "From the first move". If anyone feels like being more helpful than that, please have at it.

How could your rating be 9000?

1. White passed up advantage w/ 3. dxc5, dxc5 4. Qxd8, Kxd8 and Black loses castle with K in center of board.  Also, black should have never allowed that position. 

I'm not a master, but I see what look like alot of poor midgame moves (i.e. white giving up the free B on d3... 28...h5 allowing the Q/K fork).  When your oponent said that you were losing from the first move he was probably just being arrogant.  Keep playing and don't worry about comments that other players make.

OK Just to clear this up I played this game but didn't make the comment about 1. ...c6 the first move comment was made by a mutual friend. Either of us will play you in Live Chess good luck and don't feel bad if you lose to me.