How do you to get a spray on TF2

If you want to get a spray in tf2, you can do these things.
1. you can pick a screenshot you have taken in the game, by going to options, multiplayer, import spray, and find the files with the names "xxx is looking good!" where xxx is the persons name.
2. u can go to a site like www.fpsbanana.com and pick a spray, download it, and save it in the right folders, which the site will tell you.
3. in import spray, I'm sure you can find your own pictures, but i don't know which filenames like jpg and bmp, works, and what size the picture need to be.
good luck!