This was a 3/0 live chess game. It's a good win for me because my opponent was 2270 FIDE, almost FM standard. I looked in trouble for most of the game but just about held together, and eventually he forgot that he had to defend as well as attack. Any thoughts would be appreciated.

(Lesson from game: never be complacent, even against a weaker opponent and even if you think you are winning by force)

Qb2. Yes, valid point