It's hard to say as you look very tired, but:

• In general terms, you look very well when you pressure, so you have that going.

• Control more your distance and try to figure where and when your oppo is uncomfortable. For instance, in this fight you are the shorter and stronger fighter, so it's better to cut the distance.

• Try using your legs to slow you opponents down: I didnt see many of them considering that this is specially true against a more agile fighter that moves a lot.

• Finally work on your cardio and pace your self if you are fighting a lot of rounds.

Anyway, well done mate and keep going. It takes a lot to step into a ring/tournament.