When I averaged about 11, I planned my first pair before my cross, then when I planned my cross, I could tell where my pair would go. It took a while to plan that under 15 seconds, but I kept practicing. Make sure your F2l is under 6.5 seconds. Practice your last layer (Oll and Pll) to get them under 3 seconds in total! Keep practicing I believe in you!
For context my goal for this competition was to get a sub 10 and in the first two rounds I failed that goal. In the final I really wanted a sub 10 which I got! I overreacted a bit LOL!