One big thing that helped me is that I would give them a copy of my "bag 'o tricks" on the first day and ask them to make it into a binder so that when they go out into the real world they have something to reference to and add to as they go along... (with articles, things they find, other instructors tims, tricks, etc.)
Here a link to my "Bag 'O Tricks" - (which anyone is welcome to use... it's how to teach maneuvers, a syllibus, and a whole bunch of stuff ot help with the checkride so you as the applicant can teach your examiner)
Rich's CFI Folder - RAW PDF's... click on this link and right click on each to download
also... give them this to give to primary students on the first day - after a demo flight or somesuch: (a good primary on radio communication)
Just right click on me to download... Capt. Midnight's Guide to Talking on the Radio
Other than that... teach them to teach "by the book" - they are going to have to figure out what works for them in the end. I would try to teach them my own techniques for teaching something - but usually after I taught them how to do it "by the book." Usually a bunch of ground after the checkride where it's all about trying to show an applicant how to sucessfully keep a hobbiest interested in continuing to learn how to fly by making it fun and interesting while teaching them what they need to know - remember we all aren't going to become airline pilots - or space shuttle pilots - or whatever. Alot of my business was 25-70 year olds who getting their IFR ticket will be their highest achievement. Cash customers who showed thier appreciation for you in the form of the cold hard cash for your efforts. I would teach how to teach them how to teach safety - in a fun way so that people will keep coming back.