Layered Masks- other subjects

I have used two different subjects with the masks that I used on myself.

I find these images interesting in the same way as the previous ones, and also the way that each mask, when used on a different subject underneath, creates a completely new character each time, even though the majority of what is seen in the image is the mask which stays the same.
I do think I need to experiment with coloured masks to see if this is more effective than black and white ones.