Your point?
Just guessing. Don't get me wrong, I use Paint.NET for any image I edit / make.
Your point?
While unintentional, I accepted the cutie mark styling and I say it adds a bit of a grit to it. And the surrounding colors aren't causing the green tint. That's purposefully done due to lowering saturation on the yellow tint.
I could've called it Pinkamena Fractal, but then it'd be too obvious as to what the end result should make you think of. Sure, the cutie mark gives off the sense of it being a Pinkie Pie wallpaper, but you need to consider the colors slowly, and get that sense of it being a tribute to the Pinkamena/Cupcakes style.
I drew a Matt Smith.
Finally finished this vector.. I'm glad I'm done with it.