Technicals: The lighting is adequate and the color is good. Since the challenge ran under advance editing I think you could have done more in post to bring out the subject more (i.e. brighten up the body, eyes to strength the focal point).
Subject/composition: You probably already know that choosing this subject was the main reason you scored so poorly. Voters were expecting to see a human portrait in their working/living environment and you gave them something completely different. The composition is ok but could have been better (more off-center).
Summary: A cute photo but one that didn't meet the challenge. If this was an animal portrait challenge this probably would have scored in the mid-5s in my opinion. Overall it's good but it lacks that something extra to score better than that. My suggestion there is if available work on this some more in post processing to bring out the subject. There's some detail there that could be enhance in photoshop or equivalent.
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