2D Paint Mask effect as a 3D Face filter?

Hi,

I am having trouble with the program for creating a 2D paint mask over the face in a 3D format.

By which I mean I want to be able to paint a mask over the entire face so that when the user turns their head, it doesn't distort the image and allows for details closer to the side of the head and near the ears to be added.

At the moment there is only two options, make a foward-facing paint mask or make a 3D filter with objects but there isn't a middle ground where you can put a 2D paint effect and layer it over a 3D face.

The same effect I desire is similar to applying a texture on a 3D model of a face. In order to apply the texture as desire, a UV map is used, which is created by unwrapping the face mesh model.

I would have thought this would be possible in Lens Studio but I don't see the option.

Hope someone can help.