LightPainting Tail-Fin Diffuser Cap

This is a diffuser shaped like the tail fin of a fish to be used as a light painting tool.
The diffuser is designed to glow bright along the outer edges and have a darker glow in the middle. This design creates quite interesting patterns especially at the end of movements. Wipes from one end to the other create spiked ends on the path (as can be seen in the example photo).
The cap is designed to fit into my flashlight adapter or self made RGB flashlight (blade tool).
Designs can be found here