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Skip trowel texture is a finishing technique used to add a decorative appeal to walls and ceilings. It serves as a compromise between the smoothness of standard drywall and the bumpy texture of a popcorn or orange peel finish.
You can either back-trowel the tile as well as the substrate (back-troweling means combing lines of thinset on the back of the tile as well, not just skimming it with the flat side of the trowel which is called backbuttering), or you can switch to a larger trowel.