In this tutorial, we will show you how to create realistic growing vampire teeth using Adobe After Effects. Follow these steps to achieve a spooky and convincing effect.

**Step 1: Prepare Your Footage**
Start by downloading the footage provided in the tutorial or shoot your own. Import your clip into Adobe After Effects as an image or PNG sequence to facilitate tracking with Mocha.

**Step 2: Track Your Footage**
Use Mocha AE to track the movement of your mouth. This will allow the vampire teeth to follow the natural motion of your face. Ensure that the tracking is precise for a realistic effect.

**Step 3: Create Vampire Teeth Layer**
Create a new layer for your vampire teeth. You can use an image of vampire teeth or draw your own using the layer tools in After Effects. Position the teeth over your mouth in the footage.

**Step 4: Use Null Objects for Animation**
Create a new null object for the top teeth. Parent the vampire teeth layer to this null object. You can create another null object for the bottom teeth if desired, but for this tutorial, we will focus on the top teeth.

**Step 5: Animate the Vampire Teeth**
Animate the vampire teeth so they appear only when your mouth is open. Use keyframes to control the position and size of the teeth. Ensure the animation is smooth and follows the natural opening and closing of your mouth.

**Step 6: Apply the Liquify Effect**
Use the Liquify effect from the Effects and Presets panel to fine-tune the shape and appearance of the vampire teeth. This will help blend the teeth more seamlessly with your footage.

**Step 7: Refine and Render**
Refine the effect by adjusting the opacity, blending modes, and other settings as needed. Once you are satisfied with the result, render your composition.

For a detailed, step-by-step guide on creating growing vampire teeth using Adobe After Effects, watch the full video tutorial.