Hi!
I've just uploaded in the post below a tutorial about painting the plasma pistol and the metallic arm of my Ultramarines Primaris Lieutenant miniature.
The OSL was painted with fluorescent paint, so it looks very interesting in the UV light :D
You can see in the video that I published on my Youtube channel:
https://youtube.com/shorts/z-FfpdvLsVk?feature=share
I hope you like how it looks like!
Regards
Flameon