How do i jump farther in triple jump and long jump????

I'm wondering how do I get more distance for triple and long jump. I jump a 38'11'' ft for triple and 19'8'' for long jump and i wanna get my school record for outdoor season. I do all these leg workouts but I don't feel like I am jumping any farther. Plz help anybody!!!!|||since you cannot do anmore with you legs..u need to use your arms..swing them when u jump(at the right time) that will give u more force..and try to catch as least air as possible..dont b flat like a board.try to fly more horizontaly with your feet forward