Making something out of nothing really. Your lack of Q-Side development shouldn't have mattered, because of your overwhelming material advantage.

true, my rating was 1639 2 months ago and now it is < 1500. having a crisis of confidence which leads to overconfidence when i am ahead, and sloppy playing. shows how you can almost lose or draw a match which you should not. thank you for your comments and analysis

Even if Black protects the g-pawn, White has a free hand everywhere else. Having allowed Black ssome dangerous-looking counterplay, White was able to stay levelheaded enough to retain his material edge and whittle down Black's resources. How to win winning endgames that you nearly lost through overconfidence...