The fourth layer consists of a copied layer of my face with hue adjustments and a slight gaussian blur, layered over the ants on a linear burn, which were layered over the first face on hard light....and the first face was layered over the "Scabies Stock" on difference.
step 6 of 13
The last layer is a copied layer of the ants with level adjustments and a gaussian blur, layered on overlay.
step 7 of 13
Original source image "Ant Explosion" by ~Eos-Stock at deviantart.com