Help!! want to create paint masks...

[The Joker]

Hi All, I have a friend who owns a sign company who is happy to cut paint masks for me.
I have Adobe Illustrator on my laptop but have never touched it!
Please can somebody help me to create paint masks so I can expand my Airbrushing skills.
Simple stencils i.e. symbols, logo's, stripes, flames and window masks.

If I create them and mail them to my friend he will cut them on his plotter for me.