Lane's victory over Chandler at Kuala Lumpur

Regional duel at Malaysia.
Gary seemed well prepared and he got the advantage at around move 23 and never let it run away. Possible improvements for black? There are at least two, check the game:

[Site “Kuala Lumpur MAS”]
[Date “2007.08.22″]
[Round “6.7″]
[White “IM Lane, Gary W”]
[Black “GM Chandler, Murray”]
[Result “1-0″]
[WhiteElo “2412″]
[BlackElo “2540″]