Finding more graphic styles

[kaan.secilmis]

I'm trying to find more graphic styles for adobe illustrator other than the ones they provide. I don't really know how to make them so if there is a provider (perferably free), that'll be great. I'm trying to look for like a prism type of texture. For instance the background the shoe has.

[Myra Ferguson]

Astute Graphics, who make plugins for Illustrator, recently did a webinar on making graphic styles. And they're offering a bunch of graphic styles for free. You'll need to login to an account to download them. If you're not a subscriber to the plugins, you can sign up for the free trial. https://astutegraphics.com/learn/tutorial/doing-it-with-graphic-styles

[Monika Gause]

Which background are you referring to?