With the pattern layer selected as the active layer, I chose Filters > G’MIC and played with the Angular tiles number of the Rotoidoscope filter until I got a pattern I liked. I made sure the Preview box was not ticked while adjusting the controls so that the filter wouldn’t run constantly to update the preview. I liked the pattern created with eight tiles, so I used the Apply button to generate it into a new layer. (I always set the Input / Output Output mode box to New layer(s).) STEP 2 - CREATE THE ROTOIDOSCOPE
This pattern, though interesting, was a bit harsh and messy looking, so I selected the new rotoidoscope layer, reinvoked G’MIC so that it would show me a preview of the new active layer, and chose Artistic > Dream Smoothing. This filter was written by Arto Huotari and can be installed by ticking the Internet box at the bottom of the filters list and pressing the double-arrow button. After deciding that the default number of three iterations looked nice, I pushed the Apply button to generate a new layer and waited for a few minutes for the filter to run. (NOTE: I generally don’t run the Dream Smoothing filter on anything larger than 1000 pixels wide because of how long it takes, and I’m not exceptionally patient.) STEP 3 - SMOOTH OUT THE PATTERN
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