Face paint should always be applied in thin layers as this makes it less likely to crack and will also increase the overall comfort. Thin layers of paint dry quicker which is important given that as each layer of paint should be dry before applying the next layer avoid runs and inadvertent colour mixing on the face/body.
Create a series of templates for often repeated shapes, or find suitable stencils to use as cheats when creating a face pattern. These speed the overall process and are a great aid if you are not confident in your ability to paint the shape accurately in freehand.
Do not be afraid to deliberately mix your own shade of face paint from others in your kit or collection. Face paints come in a variety of colours and are suitable for mixing allowing you to create a unique shade as required.
For some most occasions manufacturers have pre-assembled collections of face paints for sale. These are either available suited to a generic theme, Halloween, Christmas etc or to a character, witch, ghost, devil etc. These make a perfect introduction to face painting and usually come with simple to follow instructions and step-by-step guides.
So some simple steps to get you started in this fascinating art form which will almost certainly mean that you have an unending procession of eager models once you've mastered the basics. And don't forget, you'll be the star parent at any party for years to come.