I feel like there is a whole intimidating world of artist teddy bears makers out there that I can't compete with. They have conventions with juried competitions and participate in super active message boards and only use the finest materials to make their bears. I admire this community, though, for their high standards and their engagement with one another around sewing what are essentially stuffed animals.
A few years ago I bought The ABCs of Making Teddy Bears by Linda Mead (Martingale, 2000) to try to better understand the lingo of artist teddy bear making and to see what all those jointing techniques and specialized materials were all about.
This book has 14 bear patterns, none of which I've made, but the 50 page front section has proven to be so incredibly useful that more often than not this book is on my work desk and not on the bookshelf.
Diagrams and photographs illustrate more clearly than any other book I've seen exactly how to draft a bear's head gusset, insert glass eyes, trim the fur at the muzzle, thread joint, and so many other topics that are applicable to any soft toy pattern designer.
I highly recommend it. And Linda Mead, I'd love to chat with you if you're out there somewhere!