I'm not the smartest when it comes to computer generated pics but something that may give this a different look. Maybe try a shading of white around the circle. It seem too defined going from the black to just the edge of the circle.
Theres a good chance I have no clue what im talking about but just some food for thought. Hope my comments helpful.
I must be honest. I'm not sure what I'm seeing here, but as ScoutPic noted, an edge to the object may help. My thought is some kind of almost halo around the circle. Good luck :)
Honestly... there is no halo... because it would then be defined. I appreciate your 'constructive criticism ' but the image would look very... weird in a way if there was a white halo around it. That would be defeating the total purpose of this image.
Theres a good chance I have no clue what im talking about but just some food for thought. Hope my comments helpful.