Sure! The workflow is basically the same for all the textures.
For the foliage texture, I found some good reference for the colour palette and composition. I blocked out the key shapes using simple line art, I didn’t worry about small details at this stage I was just focused on getting the overall look right and making sure it tiled well. Using the line art as a guide, I then blocked out the colours (essentially colouring in the line art). I used masks on Solid Colour adjustment layers for all of this so I can easily edit them or make variations later. After that, I added detail with more Solid Colour layers and Multiply and Screen layers for shadows and highlights.
I’ve added the Foliage_Leaves 01 PSD source file to the free PSD Demo if you want to take a closer look at how it was created. I’ve also included Wood Planks 03, which uses a similar workflow.
Hope this helps!