K-12 Preparation

I am currently preparing for the K-12 Nationals tournament in November/December of this year. I will be playing in the 10th grade section, and have set a goal of placing in the top five in that tournament.

My current rating is 1856, but I have gotten multiple 2100+ performance ratings in recent tournaments. How would you suggest I prepare for this tournament?

Anyone?

Work on endgame and middlegame strategies. Study games for the opinings you play. Play strategically.

I'll be in that tournament some day when I get getter. Because I am getting better, I've improved by exactly 390 points this year and still going. And I'm on a 15 game winning streak!

(Besides that 0 move draw agreement)