This illusion cloth is made by alternating two rows of colours in addition to alternating stitches between Tunisian Simple (TSS) and Reverse (TRS) to achieve the flat and raised stitches.
This pattern also introduces the use of a two stitch selvedge worked in Tunisian Knit Stitch. I included this because working a TRS into the second stitch of the forward pass can be difficult with the colour changes at the same location.
Working illusion stripes can be confusing, as the action in the row you are working on changes the appearance of the row below.
Use this small spa cloth to practice the shadow/illusion technique in Tunisian crochet.