Not much to say about the render since it's just the characters and not the full scene, but regarding the characters:
The girl looks okay, clipping has been mentioned, the haircap is visible (did you try to fix some black lines?), also try to customize her a bit, currently she looks like miss 0815 from game xy, or more specific, she looks quite generic.
Guy looks okay, of course it depends on which archetype you want to achieve with the look, and of course you don't see many guys in these type of games anyway...
He could've used a few more iterations, but I guess these aren't final render anyways.