1. Look at the way your own body moves in relation to how your tori moves, how you place your hand foot and position your lumbar/chest to balance
2. when jumping to gain more force raise your arms and whatever else you can to gain more force
3.sometimes it helps to look at other people's replays and see how they do stuff so you can customize it to match your own style. for one oblivion spar replay, or you can look at my replay thread. I have a few spar/selfspar replays there too
4. pm me if you want to get some more help ingame