Oh! I don't usually find dark skin ladies to be attractive, but man, she looks tasty. Damn she's hot my dude. My dick is pulsating in approval. Poses are a bit generic if I'm being honest (you can always use Studio Neo and the like to design your own poses), but all and all, this is mightily fine. I also appreciate the fact that you did not design your guy to be a fat schmuck but rather a muscle bound chad. Four stars my man.
Bad lighting? Awkward angles? Lack of plot/setting details? Could be lots of things with 3D. It's hard to pin down a formula, balancing all the visual elements, and also not seem generic.