After creating the double exposure portrait, I decided to explore a few more things you can do with portraits in Photoshop. That led me to this tutorial. This tutorial involves copy-pasting things into layer masks to get the textures you want, though I’ll note that similar effects can be created with brushes. The effect also used multiple filters and layers.
Note: I didn’t mess with the vibrancy anywhere near as much as the tutorial recommended. I set mine at 25, and as you can see that was fairly sufficient. More looked rather cartoonish with this image.