What a fiasco! Thanks all for your comments and advice
Ah well, I've made the liners now and am really pleased with how it looks. Managed to get two liners out of one fleece, which I didn't think I'd be able to, so now if I want to I have enough fleece to make another 2 liners. Or a lot of lovely fleecy accessories!
Here's the finished effort, including a homemade pirate fleece snuggle bag and a hanging hidey thing
I've also made a couple of fleece covers for the ramp, they tie on underneath at the top.
View attachment 44809 View attachment 44810 View attachment 44811
View attachment 44812