Diploma: Sebastian's Sink City

My absence has not been unproductive as I've been carrying on with my diploma coursework. To accompany the shading exercise I was asked to do a double page spread for a book called 'Sebastian's Sink City' where a miniature world is found or created under the kitchen sink. This is my piece and I've just received my feedback and was marked 78% overall. Definitely room for improvement but it's only my second submission so a good start!