Really? Reviewing a hyperbullet game? Alright.... you can just look at the engine suggestions for improvements on your inaccuracies.
5...Bxf3 didnt make much sense. You gave away the bishop pair unprovoked. Follow GM Maurice Ashley's advice. Don't make a trade unless its forced or fantastic. It's fine in hyperbullet if you want to catch people with that Qxh2 mate, but it's not good. Against strong players you'll quickly realize why.
10...Nf8 was unnecessary. The knight is only marginally better on g6, and it's not worth the 2 tempo wasted.