4.d4 3 unconected pawns like that is not the best way to open.
9.Nh4?? what was your idea with that move, if it was to atack his Knight on g4 why not take it 2 moves later?
10. cxe3 doubleing your pawns is generaly bad idea!
11.Nf3 getting the knight out of danger, and back to where it might later be of some use
and not Qxg4??? do not rush your moves. Allways look what you can do with every active peace on board.
16.h4 protecting it from who? Q? Dont be so scared of your opponents moves. You N on f3 is protecting that pawn and he can't attack him.
28.Rf7?? Please??
This is my first game posted. I am a rank beginner, [so was my opponent]. I know I made a number of rookie mistakes, so all constructive criticisms are welcome. Just be kind