Here is my attempt. I turned it into a brick wall.

These are the steps I took.
1. Follow Chad's tute but run the clouds at scale 250 & roughness at 0.77 same as Chad's.
2. New layer - Run Clouds with red & orange at the same settings.
3. Set layer blend mode to Colour Burn.
4. New layer - run bricks at the following settings: Width: 200, Height: 93.24 Mortar Width 13.73, Brick Alpha: 255, Mortar Alpha: 214.
5. Select mortar with magic wand (default tolerance of 50). Invert selection.
6. Run Bevel at 20. Colour for highlight R: 193, G: 45, B: 0, & shadow just black.
7. Invert selection & run clouds at minimum scale (I don't remember exactly).
8. Ctrl + Shift + G to make black & white.
9. Run crystalise, platelet, size: 5 Random: 100
10. Gaussian Blur at 2.
Please note: I always use a canvas size 4 times more than I want the finished product to be.
Chad, you may want to rewrite this & perhaps add screenshots? Your tute was so well written...
Knowledge is no burden to carry.