Step 1: Put Together a Design
Step 2: Print and Get Ready to Cut
After that, just get out your Xacto knife and get ready to start cutting along the lines.
Step 3: Cut Most of It
If you look at the second picture, you can see that the eye is now a barely on window flap.
Step 4: Spray It and Stick It
Step 5: Peel
You might get tiny pieces sticking off of the islands like in the third picture here. If that happens just get the Xacto out again and lightly scrape it off.