My attack looked so good, sob, sob

I ended up on top board at the ANU Chess Club tonight, and my opponent was the undefeated Endre Ambrus. Deciding to work on my positional play I opened 1.d4, with the intention of playing a closed game. All was going to plan until the opportunity arose to try and attack him on the kingside, at which point I went the hack. As you can see, it didn't quite work.

Press,S - Ambrus,E [E24]
ANU Summer Swiss Canberra, 12.03.2008

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3 b6 6.Bg5 Bb7 7.f3 h6 8.Bh4 d6 [ RR 8...d5 9.cxd5 exd5 10.e3 a6 11.Bd3 Qd6 12.Ne2 Nbd7 13.Bg3 Qc6 14.Qc2 b5 15.0-0 0-0 16.Rfe1 Qb6 17.Rab1 c5 18.a4 c4 19.Bf5 Bc6 20.Nf4 Qa5 21.axb5 axb5 22.e4 Qd8 23.e5 Bosau,J-Glahn,M/Recklinghausen GER 2005/The Week in Chess 561/1-0 (28)] 9.e4 e5N [ RR 9...g5 10.Bf2 ( RR 10.Bg3 Nh5 11.Bd3 Nd7 12.Qc2 Nxg3 13.hxg3 e5 14.Ne2 Qf6 15.g4 0-0-0 16.Kf2 c5 17.d5 Rh7 18.Ng3 Rdh8 19.Rh3 Kc7 20.Rah1 Bc8 21.Qa4 Bb7 22.Nf5 Qg6 23.g3 f6 24.Rh5 a5 Hobbs,R-Roberts,K/East Detroit 1985/EXT 2002/½-½ (50)) 10...Nbd7 11.Bd3 e5 12.Ne2 Nh5 13.Qa4 Qe7 14.Rb1 0-0 15.g4 Ng7 16.Ng3 Rfd8 17.Qc2 Nf8 18.Nf5 Qf6 19.h4 Ng6 20.hxg5 hxg5 21.Rh6 Nxf5 22.exf5 Qg7 23.fxg6 Qxh6 24.gxf7+ Elsweiler,K-Duester,F/Leverkusen 2001/EXT 2002/0-1 (29);
RR 9...Nbd7 10.Bd3 c5 11.Ne2 Qc7 12.0-0 0-0 13.h3 Ba6 14.Rc1 Rfe8 15.f4 d5 16.e5 Ne4 17.Qc2 f5 18.cxd5 Bxd3 19.Qxd3 c4 20.Qe3 exd5 21.g4 Nf8 22.Ng3 Ng6 23.Nxf5 Nxh4 24.Nxh4 Lwin,M-Segerinya,J/Jakarta 1997/CBM 58 ext/1-0 (42)] 10.Bd3 Nc6?! 11.Ne2 Na5 12.c5 0-0 [ 12...dxc5 13.dxe5 g5 14.Bg3 Nh5+=;
12...bxc5 13.Qa4+ c6 14.0-0 is better for White according to Fritz] 13.cxd6 cxd6 14.0-0 Rc8 (D)
15.f4 exf4 16.Nxf4 [ 16.e5? was my intended follow up, but I realised it didn't work.] 16...g5 17.Nh5 [ 17.e5? was once again my intended follow up, but once again I realised it didn't work.] 17...Ne8! This move completely threw me. Using all my remaining time I immediately blundered [ 17...Nxh5 18.Qxh5 gxh4 19.Qxh6 was one line I had seen, and figured I had at least a draw, and possibly more.] 18.e5?? Now my game comes crashing to the ground. [ 18.Bg3 with a clear advantage] 18...dxe5 19.Qg4 Rxc3 20.Rad1 Qxd4+ 21.Qxd4 exd4 22.Bf2 Nb3 0-1