Vampire lips and fangs pattern which I created for Halloween some time ago. It is a vector illustration drawn in Affinity Designer, made as a seamless pattern. Hot pink lipstick, some sharp teeth over very dark purple background. Great designs for a gothic style or just for some holiday mood. Later added art prints and products to my Redbubble and Society6 stores.
Vampire lips products from my Society6 store:
Lastly, while on the topic of sharp teeth, see also this fun evil monster here.