[yokai]

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 …

Regardless of how bad of an example you use, the fact remains the same. You do have a vignette on the image. There is no such thing as "natural vignette" as explained earlier. Again, your example remains a bad one.

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.

Improvement is subjective. @217 asked if you tweaked the image further in Photoshop, which you dismissed and said that you only drew it by hand, that was it. While you did admit that you did do further tweaks on the image afterwards. (Minor editing and minor tweaks holds the exact same meaning btw.) You perception of English language doesn't matter as long as it is wrong by definition, which in this case it is. He asked if you edited it afterwards, you stated no.