[Eagle]

should maybe try to do something with that marble tile.. I never see it used, and I think maybe it can help make your level look more "important." Don't spam that tile though.. maybe a small path or something at most. Or maybe use that tile as the floor, and use the yellow carpet tile. I love that tile.

Too bad there really isnt any uses for the marble tile. =[

Edit: Maybe you can use your pixel art to make the marble tile look better and use it as the floor, and use carpet over it or something. That would look cool, and make it look important, I think. Just use an addtiledef2. Could look neat if you do it right.