Here’s a simple illustration made with paths and rough brushes.
Here’s a bold text-based illustration using some of the wood from Texture 066 to mask in solid layers of cyan and magenta.
Double exposures through portraits.
These Photoshop brushes are made from samples of Ink #127.
Using Textures as Layer Masks in Photoshop
Displacement Filter in Photoshop
This example uses Ink 029. Two Photoshop layers of colour painted with a large airbrush. Brushstroke inks pasted into layer masks and inverted. Top layer set to Hard Light blend mode.
straight, horizontal and vertical watercolour brushstrokes
How to colourize inks using Photoshop.