Its a fairly decent piece considering that you have only 5 colors, but I have a few crits. You should really change the colors on it, they are too...saturated? Try making it a darker color on the bottom and top. Also the way you shaded this makes it look like more of a metal, you should really try to give it a more rough appearence. But I dunno, this could all just be what I think and everyone could disagree with im saying. But have a nice day and hope you fix your wall. :D