My guess would be that a crimper made that design. Global Sugar Art sells them.
Check out this tool. Click on the photo to enlarge it. I know it isn't exact because it has little diamonds in the center. But this is basically all it is. HTH
Perhaps it was made with a crimper?? Just my guess
I believe that it's the FMM straight frill cutter on the far right shown in the pic below:
After embossing vertically with it, a small tool was used to make tiny "pleat" marks at the thin spots & a sugar pearl was placed .
Thanks everyone! I will check into the crimper, and I do have those frill cutters, so I'll go check through them and see if it's maybe one of those. I would have never thought of a crimper or a frill cutter, so I appreciate everyone's input!!
Wow! You are good! I never would have spotted that.