Is it silly to be proud of this win?

So, I'm still finding my way but I have to say I am really proud of this win. I'm only up to about 640 Elo at the moment, but what I enjoyed about this game was that I was in a completely losing position in the start and I somehow managed to come up with the win. I don't have much experience against the wayward queen and I definitely wasn't prepared for it. I just tried to defend as best as I could and was somehow able to capitalize on a mistake he made on the back rank. Check out this game and let me know what you think. Criticisms or advice are always welcome. My goal is to reach 1000 by the end of the year. 

Yes, learning to see a back rank mate is important.

/ It's not silly. Learning to see back rank vulnerability is important.

Be proud of every game, even if the opponent resigned in the first move. It's part of the fun, like @Elipsesfoci said.