Nice dog, fair idea...the background could be improved. This would have more impact on nice green grass - if not available, then all carpet, or all floor tile. The image also appears a bit warm, maybe from indoor lighting?
The expression on the dog's face is wonderful. The lighting is flat.The toy he's playing with is simply the wrong color for the photo. Finally, the positioning of the dog in line with the axis of the camera is a bit static.
Nice stock shot! I wish a couple small things were different though.....
#1. A consistent floor under the dog would've been better because it would'nt distract us from the subject.
#2. I wish you had pulled this into photoshop and gone to "Image -> adjustments -> auto color" This would have taken the orange haze off your picture and the color would ahve been more true. Try it now (even after the fact) just to see what I mean. Hope this helps. Nice job.....goodluck! 7