One day I will kick higher, I will have an amazing tornado kick and a fierce crescent kick.  I can't figure out why I can kick slightly higher when I'm kicking air, but I kick extremely lower when I'm kicking a person or an object.  I'll keep striving to kick higher, hit my target and jump higher.  If anyone could see me when I'm practicing by myself, I'm amazing,  I kick high, I fly through the air like Hong Kong Phooey!  I videotaped myself and in reality, my kicks are lowwww. : )   : )