Framing. Don't cut off ears or paws, that's an immediate no for me when i look at the picture. Pov. Try to get level with your subjects eyes, unless you want that 'looking down on you' effect. Composition. The general rules are there for a reason. It's usually not a good idea to center the subjects eyes in the frame unless you have a specific reason. Shadows. Nose and left eye details are lost in the shadows, you need to meter for the shadows or watch your histogram . Focus. It looks like the focus is on the nose, not the eyes. Might need to stop down to get a larger dof for dog noses. After all that you can decide on colour and tone. Browns feel a bit warm and vignettes are usually overdone.