I like to use mine with the lines attatched between their legs ( you will need a girth loop thingy) It is great for working them long and low. Make sure you start off with it loose though
The sheepskin bit across the back should be level with the stifle, so yours is a bit low. Maybe let her stretch a bit more as well. She looks lovely though
She looks relaxed in it. I would start off attaching a bit lower either between the legs ot to the girth buckles. It will help her strech and work through her back more.
I've been thinking of buying one as well, but it will have to be on a very loose setting as George doesn't really do outlines at the moment!! I can just see myself getting in a terrible tangle with it, I'm a bit clumsy at the best of times!