Returning for comment. Very nice lighting and sharpness, and pose. It would have been a bit better not to cut the tip of the ear at the top, but overall, this works.
Oooooooooooh, so cute! How on earth did you get the dog to sit still? I know the collie breeds are imfamous for MOVING all the time, LOL! A very well done shot overall, I like the bit of ripple in the cloth under the dog's ear area there and the DOF is very well done. My only complaints are the tip of the ear (basically the hair) on the top being cut off and just a tad too much space on the right for this crop. If you had come in a little bit more on one side or the other it would seem more balanced to me. A 9
This is a really nice shot of a great subject. I think when you brighten a photo like this, it usually looks better when you darken the non-white areas so they don't look too washed out. Still, this is a beautiful photo.