I like it but instead of my eye going for the dog's eye, I'm drawn to the blurry nose. Maybe it's just me but it throws me off. It's still nice and pike how you did the lighting!
Blue
It's hard for me to judge the lighting because the composition bothers me. But, I think the flash is a touch too bright, especially on the snout. Also, a little more light on the dog's left eye would be nice. Keep in mind I'm not on a calibrated monitor and these are only my opinions.

The light pattern you describe is called split lighting. It is acheived by having the key light 90° to the subject and the subject shot with a full face (both ears being the same size), one side is lit, the other in shadow. Neither of these have been accomplished. Keep trying.I was going for the half-light half-dark face look on this one. Thats why the lighting is the way it is.
The light pattern you describe is called split lighting. It is acheived by having the key light 90° to the subject and the subject shot with a full face (both ears being the same size), one side is lit, the other in shadow. Neither of these have been accomplished. Keep trying.I was going for the half-light half-dark face look on this one. Thats why the lighting is the way it is.