On undermining weak pawns, forcing them to advance

This game features a QID played OTB at the Berkeley Chess Club last Friday. The time control was 90 minutes for 30 moves, with 30 minutes added after that. I was playing black. The opening is rather bland, with some sparring for e4 control. After some inaccuracies, I end up conceding e4 but it is counterbalanced by my opponent making an inaccuracy with h4, rendering him unable to pursue the kingside expansion plan with f4. Black manages to restrain and blockade the central pawns, rather similar to a scotch, and forces them to advance. Then a manoeuvring game begins in which black has the initiative owing to his blockading the now useless central complex, and creating some threats.

Unfortunately, too much time is consumed in this process and the endgame that results (not without subtleties) is full of blunders, and I am unable to convert a won game.

All in all, a well fought game I would say.