Steps. 1  1. Thoroughly wash the apple with water. 2  2. Peel the apple. 3  3. Core the apple.  4. Soak the apple in a mixture of lemon juice and salt (1 cup of lemon juice, 1 tablespoon of salt) for about 15-30 1  minutes. 5. Carve the face as desired, exaggerating the features.  6. Dip your finished face in the lemon juice mixture again. 7. Place the apple in a food dehydrator or in a warm, dry, well ventilated place. You can insert a wire into the apple to hang it, pierce the center with a long skewer and put it in a vase, or place it on a rack.