If you want to be a good GFX member(I'm not, so don't flame.), you got to take everything from the top. Your going to have to learn to take negativity, but that kind of negativity that people say you need to improve on. You have a right to be mad at people who say something negative and run along, with no advice to improve whatsoever.
This is fine in my opinion, I personally don't like to have black as a background with colors all squinched up in the middle because it's looks odd, just my opinion. The top middle to right could have had a little more "abstract" to it, just so it doesn't look all "emptied" out.