I have this amazing crafty friend that I made this pink octopus needle book for. She embroiders beautifully and hopefully this will be helpful. I had some issues though so it didn't come out as I had imagined. Mainly it was smaller then intended. I thought I was careful with the measurements but something went wonky. I think the finished product is nice but I think bigger would have been more useful. A tip, if you do this project, then printing the pattern on freezer paper and ironing onto felt is a life saver!
Freezer paper info: https://americanfeltandcraft.wordpress.com/tag/freezer-paper/