I used a round 3” cake pan to make this homemade vampire birthday cake, I can’t remember exactly what size, 18” maybe. This was for a 13 year old’s birthday, so I put red food coloring in the cake mix. A red velvet cake mix would work well also.
I printed a picture of the vampire lips and enlarged it until the width of the lips was the same width as my cake. I cut it out and put it on top of the cake. Using a serrated knife, I carved the lips. I tried to round the lips out gradually so they looked realistic. I used a paring knife to carve out the inside of the mouth indention.
I covered the inside of the mouth in black MM fondant and the lips with red MM fondant. I used a blunt plastic flower making tool to put indention lines into the lips. I cut the teeth from white MM fondant. I used store bought red gel icing for blood & to write.