Purim or Birthday princesses usually decorate their crowns with hearts, jewels or flowers.
.If you check out the eye design tutorial, you could probably use the eyes there for a base to your princess design
This tutorial I used for the base – pearl colors of Grimas, they shine but they are subtle and they are of course water based
Now to upgrade the painting to a princess – I will add a crown of some sort, adding the jewels or flowers or hearts.
Off course I will end the painting with some sparkly glitter!