Stalemate

Hi, I had a game not long ago where it ended in a draw by stalemate. I know that stalemate happens when there can no longer be a check on the king or a possible checkmate. However I am a beginner and I might be missing something.

I have a picture attached where I have two queens, a knight, a rook and bishop ready to bring helfire on my opponent and I have no idea how it ended in stalemate. Please explain ^^

White is not in check and has no legal moves:

Kxc8 guarded by the Bd7. 

Kb7 guarded by the Qh1. 

Ka7 guarded by the Nc8.

Ka8 guarded by the Qh1. 

c7 pawn blocked by the Nc8. 

You make a classic beginners mistake - it's completely unnecessary to promote the f pawn to another queen because you already have more than enough material to give checkmate. For example Rb3+ Ka8 (only move) Qa1#. When you have a large material advantage don't waste time promoting pawns or capturing all the opponents pieces, go after the king to win directly and significantly lower the risk of allowing stalemate. 

Ohh I completely understand now. I wanted to flex with the queens that's why I promoted the pawns hahah. That backfired on me!

Sometimes you win, sometimes you learn. Thanks for the replies