Also this is my first Instructable, so lemme know if I can improve.
Step 1: Gather the ingredients
Screen--already exposed with image and ready to go. I did mine by putting marigolds on the screen and squishing them down with a sheet of glass and exposing the screen in the sun.
Screen printing ink
Toothbrush--this just seems really handy for printing. You can use it to put ink onto the screen and when you are done you can use it to scrub it off!
Newspaper--lots of this. Put some down so you don't make a mess. Save the coolest sheets for printing on. I found color pages and pages with huge mostly black ads worked really well. Try printing with whatever pages you like best.