critique my opening?

Originally posted by @uzless
Can one of you experts give me some feedback on my opening here, especially with the bishop capture of knight at the beginning and the subsequent follow up which led to victory?

I'm curious if/where black made a mistake somewhere given his 2100 rating.

Game 5796116

Just a B player here, but you might consider developing your pieces, getting your king castled, and connecting your rooks before you start full scale maneuvers. You didn't play like a 2000+ player, but fortunately neither did your. opponent.