My only formal instructor training was with TJF...15 years ago! In all fairness I remember little from it. What I have developed over the years of training is an awareness of how I don't like to be taught and how I do like to be taught. I've spent time in the past 6-12 months developing my ability to see how somebody can improve and also feel how somebody performs a technique on myself and pick up on what they can improve.
I've been quasi-teaching the kids class for a few months now following on from our sensei who was ill for a number of months - it's all supervised, but nothing beyond dan grades being around at the time as opposed to direction on the teaching itself.
For me, I like structure, I like to be aware of who has done what in recent weeks and what the class as a whole has covered. I've done some work outside of the dojo researching teaching, including a very good book 'Leading the Way' (http://www.amazon.co.uk/gp/product/B009 ... UTF8&psc=1
) which I will re-read again soon to get a bit more of it stuck I my head.
I don't have formal plans per-se, only recollection of what stage we got to with things in the previous session, so I can pick up from that point and continue from there - that is fluid enough to let some sessions get further than others depending entirely on who is training and any points which need more work than expected or vice-versa.