Cleans and Hi-Pulls are a prime learning exercise. It takes a lot of rep work to establish timing and getting into a groove with these movements. Most, when learning to clean, will depend too much on the arms and shoulders for the pull, with the back/legs as a secondary concern. The idea is to lift with the whole body, something like a gestalt approach. The Kono clip (though for the snatch) give a good example of the beginning and secondary pulling motions. Might want to use a empty bar for a week or so to perfect the mechanic's of the exercise. Once you work yourself up into some serious weight you will understand that shrugging the traps, with the upward pull, is of prime importance also. Some guy's will keep the gaze of the eyes looking up when doing the pull, the body tends to follow the eyes. Others will not.
In any event, try BB'ing reps's (8-12) rather than any heavier lower reps for a couple of month's. Get the body use to this movement.Adds thickness to the whole upper body. Great for athletes as a prime training exercise for most sports. Good Luck.