When you ride English, you need to make sure your shoulders, hips, and heels make a straight line, they are even with eachother. Your heels need to be cranked down as far as you go, and your toes need to be pointed inwards, not outawards. Your hands should be about 2-3 inches above the withers, never touching the horse. Your reins should be snug, and even, with no slackage. Move your hands forward and back with the horses neck, your hands should not stay in one place.

When you go into a canter, you want to be sure your heels are extremely far down, helping you to not bounce around. When you post, post from your knees not your feet. Your feet should stay glued in place, and not move around back and fourth. Remember to make sure your shoulders, hips, and heels are all in line.

Make you sure are not too stiff, yet not to loose in the seat. Sit up straight and don't slouch.