Started with the McNab Ancient tartan as my reference. (Family tartan!)
Here's my version using the excellent techniques given in this tutorial. I have made plaids before but that "added twill" layering at the end to fill in the twill pattern on the solid color areas really took it up a notch! I did use the final blotching layers to practice achieving the effect but I probably would not use it on mockups for new products. Of course I can now use it for other texturing projects!
Great class. Thanks Helen.
Below I tried a mockup on a M Kors Tote bag. First applied the design on the bias. After adding a gradient background and a drop shadow & bevel/emboss on the bag, I experimented with blending modes on the design. "Color burn" had the effect of the material being a printed leather vs. fabric. Fun!