Stickers are a perfect way to practice the parts of the face. My kids loved them, and we had several different kinds over the years.  These by Peaceable Kingdom Press are wonderful, and they are reusable.

We also had a set called Funny Faces Funforms. Be sure to say the Spanish words as you make the faces, and again when you are done with a face.  Have fun playing!

Buenas noches, luna - Goodnight, Moon in Spanish
How to Introduce New Spanish Vocabulary to Kids