Maybe it's must my eyes after not much sleep lately but the plane of focus appears to be at the shoulder and behind the head. I don't have a problem with shallow DOF but the eye should be the in the area of sharpest focus.
I agree with Jim about the PoF. Having said that, your title of your post is "is my pet photography any good." I don't think it is fair to ask that given this is just one photo you are sharing. I hope to see more!