First identify the SMIM (single most important movement). If the student is lacking tipping then you start with tipping drills. In general you work on the primary movements of tipping, flexing, and fore/aft balance and then follow with the secondary movements of CB/CA. However, is some cases we must address one of the secondary movements before we have worked through the primary movements. For example, if your student has zero natural CB when working on tipping you may want to do a few staionary CB drills to get them moving in the right direction.
Take a look at this thread for some ideas.
http://pmts.org/pmtsforum/viewtopic.php?f=1&t=2858The SMIM will change as the student progresses. This checklist may help:
Things to consider for MA:
Is the stance width appropriate for the size of the skier?
Does the release start by flexing the outside leg?
Does LTE tipping lead engagement to the new turn?
Are the feet pulled back at transition?
Is the inside foot held back throughout the turn?
Is there enough CB and CA and is the timing right?
Is the pelvis included in the CB/CA movement?
Strong inside arm?
Is the inside leg flexed as the turn progresses?
Does the outside leg extend naturally (no pushing) as the turn progresses?
Does LTE tipping of the inside foot continue throughout the turn?
Is the skier balanced over the outside ski?
Is there a pole touch and how is the movement and timing?
Alignment - watch the skis and knees carefully - does anything look like it needs go be tipped in or out?
Taking video for MA:
Stand about half way down the run. This depends on length of run and amount of terrain you can see. Generally I try to split the visible filming distance so I can get an equal number of turns from the front and back. Video at least 5 turns of the front, as the skier approaches, and then at least 5 turns from back, as the subject skis away. Pan smoothly as the subject passes keeping the skier in frame so we can see a side view. Use the zoom and OIS features if your camera has them. I suggest a max of 10x zoom which will help with image stability. If you need to exceed 10X zoom consider using a monopod.