Morgan

I was wondering another thing about the round kick. When I kick high I always have to turn my hip over a bit more than my leg, which means my back is showing for the opponent. At the point of impact should your hip be in line with your leg, I mean should they be pointing exactly in the same direction? If I lift my leg straight out to the side I can just get it a little above knee level. I try to stretch but I'm having a hard time getting any more flexible sideways. Or maybe flexibility isn't the issue? If anyone has got any advice/tips or can tell me what my problem is I would really appreciate it.