So my mare and I have JUST made the switch from Eventing to Hunters and our first show is next weekend!

She doesn't have her flying lead changes yet, so we'll have to make do with simples for now...but in last night's ride I noticed that when we get jumping (which she LOVES and gets her going!

) she sometimes doesn't want to break to a trot to then pick up the simple change. So that results in an off balance corner and then a really sloppy looking change when I finally get her to back off and break to a trot for a few strides.
Sooooo anyway have any tips or exercises on how to get her downwards faster so that we can make the change look more fluid (without me having to fight with her face to do it)??
I know we need to just work on our downwards in general on the flat, but wondered if anyone had any exercises they do that helps?