Awww, what a sleepy dog! He looks like he is standing guard but he/she is so desperately tired the eyes have just drooped down and closed for a snooze:-) Lighting and B&W tones are great. The only critique I have is that I think the image grain is a wee bit too heavy-handed - especially where it peppers the woman in the backdrop. The grain there is too much that it appears like a crackled pattern. Pull back on the grain and make it subtle - I think that way will make it look better visually.