Quite nice for a Firstie! As Guy Axworthy wrote, I too, would suggest that you play around with the lights. Fitting Lighting and perspective can shockingly raise the look of your renders. Goodk Luck and Fun with making the next ones!
Great start, I would get some more light in the scene to help with noise and get some light focussed on the face/shoulders to draw more attention to that area. Also if you get a nice light reflection in the eyes it can really bring a model to life