realistic perspective

I like backgrounds that feel like the characters are really in a tangible space. So I started making my own backgrounds with more appropriate proportions of objects, depth of field and subject matter. The situations some of these backgrounds hint at are also a little more "gritty" than other...

All these backgrounds offer a realistic perspective for the player. Characters are to scale with the environment and the viewing angle corresponds to that of the game (a good tutorial here). I'm trying to make the best backgrounds for a specific situation : beach, bathroom, bedroom, desert...