My son's 'girl friend' (they are 6) is about to have a birthday. Her Mom wants me to make her a Tinkerbell cake. I have the cake idea already, but I need to make a pretty good size Tink to stand up on top. I used to work in a commercial bakery and the owner was constantly using edible markers to color the fondant for cut outs like this one will be. However, I do not have any and I was planning on using crayola markers. The child will not let any one eat Tink anyway, so not being edible is not a problem. My question is how in the world to get the proper skin tone for her. Would I try to use a watered down brown marker, or watered down skintone Wilton coloring, or just regular facial make-up slightly watered down to make it pale? Any ideas would be great!

I would use a toned down skin tone. The brown would be too dark regardless of how light you think you can achieve the tone.
I would just do a test run with the markers on a piece of fondant to see how well it works before applying it to my original piece.
Good luck
Can't wait to see the photos.

It's been a really long time since I have had crayola markers, but if I'm not mistaken I am pretty sure they had a skin tone color in some of the larger packs. Wouldn't swear to it though. Good luck.