I need to make a mock brochure for my english cl, don't know where to pull graphics, help?

I need to make a brochure, prof. said simple is fine, but I can't find any copy/paste things on the internet, and have never taken any graphic design. For instance, sometimes you see a heading sandwiched in between two scroll-type looking lines...where the heck do you get that at? lol, I am so doomed.