I'm kind of new at this myself, but I think I may be able to give you some pointers. I can't really see the render all that well or really make it out at all. Meaning it's too dark around the render. The depth is decent but I think you might need to throw in a few c4ds or something to help the flow. I know this doesn't really matter all that much, but thats a rather large Tag. I would say if you want a bigger tag then go with 400x150 for size. These are just my opinions however. Oh, and try some effects for your text, and maybe a different color.