Pros: The cut is, for the most part, very clean. You can see some lighting around the tip of his head, but that's not a major concern. The background compliments the render well.
Cons: I'm not a fan of your border at all. It looks like you just got a C4D and extracted a square from it. Perhaps use something else next time, such as bones.
Improvements: The fact that you have an outer glow is nice, but if you choose to add one it should not be limited to the half portion of the spray only. So try working on that next time. The inner glow is fine.
Notes: Smooth, clean, and cut well. Just work on your borders a bit more.
Pros: Another great quality spray by SloMoFio! Awesome border.
Cons: I'm not sure but is the white bit at the top of the border meant to be there? because it looks a bit out of place.
Improvements: fix white bit if not intended to be there.
Notes: keep up the great work,