Okay, Many Questions, Starting With.. How do i improove my freestyle?

Okay, So, My record on the 50m free is 26s. It sucks. Im 6'4 190lbs And i SUCK at everything else. (not really) im just not down with some stuff yeat, im too panzy to do Backstroke ( im extremelly fast ) but have the biggest fear of hitting my head on the wall. After i do a 50 butter fly.. i can no longer do it perfect. IT SUCKS. Right now my best stroke is the freestyle, and i want to make state this year with a 23.50 sec 50 individual free style on in a relay. What do you guys suggest me to do Im going to start practice this year this tuesday oct. 23. And i will try anything to make me improove my swimming skills. I wanna work on my Jumps, My flip turns, and how i do my stroke.. whatever makes me move faster then normal! PLEEEASE help. Ive looked everywhere and i cant seem to find a reasonable answear. I know practice makes better, but:rolleyes:.. i need some technique to try to practice LOL.