I remember one time as a child standing in line for over an hour to get my face painted. That is dedication! Children seem to love to get their faces painted. Now, I am no artist. You can, however, easily paint fun holiday themes if you break down the picture into simple shapes.
Take the jack-o-lantern pictured above. A simple orange blob, some black eyes, nose, and mouth, and a green stem and you are done. I didn't make that, though, my sister-in-law did, and she is an artist.
Here we have a spider web. You have a white web made from drawing various lines. You then have black spider, which is made from drawing a couple of circles and some legs.
Finally, we have a simple ghost. A white oval-ish with some black eyes and nose.
There are a few different types of paints that people often use for doing face paints.
The first is a simple crayon or pencil. I haven't tried these, but a youth group at my church does face paints every year at the Halloween party, and they seemed to think they were not as easy as paint, which makes sense to me:
You then have actual face paint:
My sister-in-law just uses normal old acrylic paint:
Try this out with your children! You can do it for any holiday, sporting event, or even just something fun to do along with your weekly theme.