Place your white chocolate in a microwave-safe bowl. Microwave in thirty-second increments until melted, making sure to stir in between.
Pour melted chocolate on sheet pan and spread it out in an even layer, about ¼ inch thick. Quickly add the gummy teeth all over the chocolate. Before the chocolate sets, add in the vampire blood dots by sticking the tube of red gel into the chocolate right below the teeth and pressing as you pull it out. Repeat this to all the vampire fangs. Add extra drips all over the chocolate and to the teeth to make it look messy.
Place the sheet pan in the fridge for 5 minutes to allow the chocolate to set.
Break the bark apart into individual pieces with a sharp knife, making sure each piece of bark includes a vampire fang.