My first successful queen sacrifice

I thought this was worth sharing, even though my opponent wasn't too good.

1.e4e5
2.Nf3Qf6
3.d4exd4
4.Nxd4d6
5.Nc3h5
6.Bd3h4
7.h3g5
8.Be3g4
9.Nd5Qd8
10.hxg4Nh6
11.g5Ng4
12.Qxg4Bxg4
13.Nf6+Ke7
14.Nxg4Bg7
15.Nf5+Kf8
16.Nfh6Bxb2
17.Rb1Bc3+
18.Kd1b6
19.Bc4a5
20.Nxf7Qe8
21.Nxh8Kg7
22.Rxh4Qxe4
23.Bf7Qxg2
24.Rh7+Kxh7
25.g6+Kg7
26.Bh6+Kxh8
27.g7+Kh7
28.g8=Q#

I wish I knew how to make diagrams like everybody else here. 

25... Kxh8 by the way, but you're on the right track with examining moves such as Qxg4 and Rh7+ (even if they don't always work the way you'd wish them to)

yea, after looking at the game again I wondered why he didn't take that knight, and I can't remember if I had a plan against it.

Black should have start thinking exchanging minor pieces after being a whole Queen ahead such as 16...bxh6, not Bxb2?, should have been an easy win for black. Such a sacrifice of your queen was a very poor exchange. Hope you know that?