I recently created a couple of masks to do some shadow work. The first shadow mask I created was for the shadow of co-dependency, which is something I have struggled with most of my life. The second shadow mask I created was for the shadow of the nice guy and all the passive aggressive behaviors the nice guy embodies. While the two masks are related, they are also distinctly different in some ways.
I created each shadow mask to embody the specific behavior I wanted to call forth. I painted the 'face' of each mask. On the inside of the face I created a collage where I glued the internal messages I tell myself. By externalizing the shadow into a mask I provide myself the opportunity to explore how that shadow shows up in my life and consciously make myself aware of it, so I can work with it in a way that doesn't allow it to sabotage my life.