Well, I don't know too much about the Danish Gambit, but I'll try and give you some useful feedback.
1. In my opinion White played far too passively with Ne2 and Bd2 considering he played one of the most aggressive openings out there. Ne2 also blocks the f1 Bishop. Nf3, Bc4 and 0-0 looks far more ambitious to me.
2. White wasted time by moving pieces twice, and didn't castle.
3. exd5 opened the e-file, which allowed you to get a game-winning attack.
Well here is a game I just played, and won. I was black in this game. I would like some comments from white's point of view, as I know my opponent in real life and would like to help him get better at chess.
Just for avoidance of doubt my opponent is not Max, William or Thomas. Nor was it John.