Artexing Comb Fan Ceiling Texture How to get the Pattern Straight

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Artexing Fan + Shell Artex Texture Comb Pattern
Equal rows, uniform finish. Where to start patterning?
To make this pattern I used a STANDARD 10" texturing comb tool
Where on the ceiling do I start the pattern, you may ask?
Setting out the very first comb draw/swoop through the texture, enables the finished comb pattern to run uniform, straight rows, down, and across the entire length of the ceiling (or wall)
Using a standard 10" comb tool to create the half fan & shell artex pattern combination, and a 3.5" ROSE comb tool to create the edge effects.
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