Hmmm... I think the principal flaws behind this theme would be the contrast in textures and colour~ Firstly, I think it's actually not the best idea to make the background colour the same as the predominant colour in the render, unless you use effects such as brushing or smudging to distinguish it. Secondly, I don't think you should have such hard effects behind the soft, blurred render, or perhaps you could harden/sharpen the render instead. The text next to the banner also hurts my eyes, ;; Overall, an honest attempt, but it could be made a whole lot better.
5/10