After just a few hundred hours of instructing (maybe less?) you will begin to realise that exercises 4 thru to 9 are the most important, especially Ex.6.
Everytime you do a checkout look for errors and point them out as a polite reminder. If necessary do some instructing to remedy - it's what you get paid for. If in two minds as to whether or not to send someone solo or whether to sign someone off then try keeping your eyes closed when they land. Can you do it? Do you dare? Hmmm!
VFE.