Learn From the Mistakes of Others (read: my mistakes)
"You must learn from the mistakes of others. You can't possibly live long enough to make them all yourself."
It's much better to learn from the mistakes of others than to make them yourself, because you don't lose rating points from other people's mistakes!
Below are some mistakes I made, and the lessons I gleaned from them; no excuses for you anymore!
Playing Too Passively (Afraid of "Phantom Threats"
Missing the Opponent's Threat Completely
Underestimation of Opponent's Resources
Black just played 8...Bxf2+ 9. Qxf2 Qxb2
How did White punish Black's greed?
Leave a comment with your answer and I'll comment the rest of this game (which White won beautifully)