OMG I LOVE YOU. Thank you so much! I didn't think it was that simple, thank you so much for the explanations! Still have a lot to learn.

Hi there! I'm pretty new to Sketchup, I had some classes at my school for the basics. I tried to work on a projet which I thought would be easy, but I'm stuck and I don't know what to do! I did my vector work in Illustrator, everything seemed alright when I imported it. I push pull, it says that it's solid. When I put my two shapes together and try to do an outer shell, there's holes everywhere. And when I want to save my file, Sketchup says that there's error and that it should be able to fix it. And when I try, it's just cutting some of my edges. What did I do wrong?

Imgur (imgur.com)

https://www.dropbox.com/s/gdenkl8mj5256h7/Triss%20Merigold.skp?dl=0

I really appreciate any help you can provide!