I find that doing lots of progressions on my own really helps me. It took me a long time to get my standing backflip back but this is how I went about it:
Lots of backbend pull overs (back limbers)
Lots of preparation jumps (from standing lean backwards and jump onto back on a mat)
Lots of Donkey Kicks.
My main problem was not leaning back enough, so the preparation jumps really really helped me to get it.
I found it helped a lot to do it onto a splat mat first as the softer surface stopped my wrists from hurting too quickly!
I also did a lot off a Double mini tramp onto a safety mat. (the slope really helped with the lean) If you don't have a DMT a normal inclined trampette will do the same job!
I found that flick to 1 foot was easier, and then the flick to 2 came easier once I had that.
Other than that, really just get your coach to do less and less.
Out of interest, is there anything stopping you from doing it on your own? Fear, lack of strength, etc?
Hope some of that helps!
Marie