Opening a file on the Kingside?

Here is a recent game I played - but I'm not sure if my opponent gave me enough of a fight??

CW vs GJB
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1. Nf3 d5
2. e3 Nf6
3. d4 Nc6
4. Be2 Bf5
5. 0-0 e6
6. c4 cxd
7. Bxc4 Nd5 (Not sure why I played this ... )
8. Nc3 Bg4
9. Nxd5 exd
10. Be2 Bd6
11. a3 ... (This seemed a little passive and unnecessary to me ... )
11. ... 0-0
12. Nd2 Bf5
13. Bf3 Re8
14. Bxd5 Bxh2+!
15. Kxh2 Qxd5
16. Qf3 Qd7
17. Rh1 ... (Now white will try and reposition the King and take advantage of the open file ... )
17. ... Bg4
18. Qg3 Re7
19. Nf3 Bxf3
20. Qxf3 Re8 (White cannot reposition his King to g1 because of (Nxd4 winning a pawn)
21. Bd2 Re6
22. g3 Rf6
23. Qg2 Qg4
24. Re1 Re6
25. d5 ... (The fork is a mirage ... !)
25. ... Rh6+
26. Kg1 Rxh1+
27. Qxh1 Rh6
28. Qg2 Ne5
29. Kf1 Nf3
30. Re2 Rh2 (Black's queen is a gonner !)
31. Qxh2 Nxh2+
32. Kg2? Qxe2

0 - 1