Quinton 6

these images are from a shoot on monday. The Model is Quinton Lafferty, for a first shoot its not bad, but I am still not really satisfied with my work. It was late, and the location I picked surrounded by the tall buildings got dark quick. i would definitely do some things different next time. Also, Same question as on the other images, Does this seem like excessive noise for ISO 400? please give your input.