How is this build ~2W 445nm

[Zakkusus]

I am planning on making my very own 445nm Laser Pointer. Anything I could do to better my build? I will post pictures as it is built.

445nm 9mm Diode In V4 Copper Module W/2.2A X-Drive w/ 3 element lens
(I am planning on making a mini copper heat sink for the driver)
https://sites.google.com/site/dtrlpf/home/diodes/9mm-445nm
SkyRay Host Kit
2x 18350 (Will be determined by host)

Please pick apart, the build and me if necessary. I will take and digest all input.

-Zakk