Hi Charlotte! Glad to hear it went well for you.
I am a big fan of doing a few of this kinds of events every year, at least 6 if I can. But, I now do it a bit differently. I usually say YES, I would be glad too, BUT, I want to do it as a fund raiser for your ________ . So, the faces will NOT be painted for free!!! I tell them they will charge $5 a face for easy stuff, and $10 for the harder things, but I will give it ALL to the charity bringing me in. They just need an assistant to take the money, and coordinate the line. Of course, I insist they advertise this amazing gift I am giving them in the 'newsletter," pr, whatever, with a photo of my work and my website.
Also, think of ways to pull paid business from the crowd

If you are not going to do the faces as a fund raiser for them, here are a few tips:
1) It is more important to get THEIR contact, than to give out yours.
2) Do your BEST work, regardless of the line build up. Your best work will attract more customers who will pay for future events.
3) Have all kinds of things around that let people know you do this for PAY: business cards, price sheets, upcoming event flyers, sign-ups for your special days (like Halloween), etc.
- Lilly Walters, 909-398-1228
Henna Tattoo Artist, Face and Pregnant Belly Painter
http://www.funfacepainting.comAuthor of 4 books for Face Painters, including the new 3-D Jewels and Necklaces
Books and Face Painting Classes
http://www.funfacepainting.com/book.html