Continuing with my EVA foam exploration, I added a strip with hot glue to my alien head to form a “dam wall” to make a simple overbite mouth. Then I backfilled the foam with clay and blended it into the head. The foam made keeping a sharp ledge for the mouth easy, and the clay covered it easily.
Alien Mouth
![EVA foam mouth on alien head with concrete paper clay.](https://rebeccaruggles.com/wp-content/uploads/2023/06/using-eva-foam-as-a-dam-to-form-alien-mouth-with-concrete-paper-clay-by-Rebecca-Ruggles.jpg)