To erase paint from a paint layer

1. In the Paint Layers window, select the layer with paint you want to erase.
2. In the Paint Tools tray, select the Paint Erase tool.
   
3. Stroke across the paint that you want to erase.

   Paint is erased in the areas you stroke. Adjust the Radius, Strength, and Falloff for the Paint Erase tool as necessary.