Remember to keep your core engaged, and avoid letting your knees cave inwards, or your back round forward. 

Keep your head and neck in a neutral position and avoid looking up or down. 

If you’re using weights, hold them on your shoulder or in front of your chest. 

We recommend an air squat (i.e., without weights) to begin with. Along with the deadlift, this can be a complex movement to nail down, so again, don’t hesitate to have a trainer observe you or send a video to your coach.