>>743111Working off just the side kick, he also failed to align his knee and his foot.
He also failed to turn his hips into it. He also never chambered it properly. There's basically zero weight or forward momentum behind it, that's why he has to lean his body and head back so far: If he didn't he'd be bringing it basically straight.
He also failed to fully extend his foot, which is also crooked. This ties into the kicking upward on the sidekick thing: He's got no forward motion, so he does this limp flacid twisted foot thing because if he positioned his foot properly, he'd be hitting with the side of his foot.