[VirtusGraphics]

… but that's like replying to someone that says «Brr, it's cold» with «THERE IS NO SUCH THING AS COLD. JUST ABSENCE OF HEAT»
Like ok, but common...

That was a horrible example, even for my standards. (If you've read my examples, then you'd know how bad they can be.) There isn't an absence of anything here. You stated you only drew it and didn't alter it further in Photoshop afterwards. Which you did. So there is that.

No it's not.
«It's actually natural (vingette and noisewise)»
«there is no such thing as "natural vignette or noise". Its an effect by digital media»
That's stating the obvious in a different way that would imply something to be wrong.
For example when someone says it's cold then that may be true. However technically it's false because it's absence of heat — but that's what we refer to as cold …

I didn't really do any improvements on the artwork itself, which is my perception of the question he asked. I did not. I only altered the way it is displayed, not the artwork itself. Doesn't really matter since it is quite obvious.