I think you misplayed the opening, wasting a lot of time on a queenside expansion that just weakened your pawns, and at the same time dangerously neglecting your development. But your opponent failed to come up with the big blow, and you were there, ready and waiting when your chance came.!
Game link https://www.chess.com/live/game/5819962202
I won this game, and while tense, I only felt loosely vulnerable during the pawn pushing stage as it came to an end. After checking the game I learned I was in very rough shape and should have been losing, but my opponent didn't know how to beat me down, so we just pushed a rather even game building tension until one opposing blunder led to another and I tore them apart. If someone could explain the flaws, I would appreciate it. I can see some of the lines that hurt a bit, but hearing an explanation from a player more familiar with these positions or just better at the game in general would help me understand what was going on here. I'm trying out the Qd8 Scandinavian, needing an actual black opening response to e4, (I used to just wing it with e5 and hope for the best.) While there are probably better openings to try, that will be for another time and thread. My goal in this thread is understanding this aspect of the Scandinavian after about moves 8-9 and onward.