I made the cover in velvet and it looks so much more professional. I  was also able to add a little stuffing into the derriere to mimic my bum. It's now a very close fit to my body - just a little short in the totso but that's a very easy pattern modification to do.

The pattern is avalable here in my website shop and as an Etsy listing. I have provided it as a half-sized pattern as well - here is a short video of how I use my mini's for pattern development; 

https://youtu.be/Dl8n6ESQ15c