Have you seen this site?
Flowers – Peter Dahmen
He makes some of the best pop up cards I've ever seen. You will also find him on you tube with tutorials for his kits -many are free.
Here's a book of templates for 3 birds. I used them for a series of birds I was making for a Morris and Co exhibition. I copied the templates on the back of different wall papers. Here's a photo of one of the things I made. The flowers are hand made. If you are interested - I'll be happy to show you how to mount the birds into the flowers.
Papercraft Birds How to make 3D paper craft paper sculpture | Etsy
Cheers
Mike