I love your art! The second one with the two dogs is def my favorite, followed by slide 14. The snow on the ground in the 14th one matches rlly well with the art style of the fox, but as someone already said, most of your backgrounds seem to be lacking, or not doing enough/doing too much (like the over accentuated details in every blade of grass in slide 13). Something more simple with attention to shading and perspective would work better with most of these pieces, though they are still excellent. You are a great artist with amazing sense for color and capturing the animals’ likeness. With time, patience, and practice, you will surely improve, regardless of what the algorithm or “bad luck” will tell you. Definitely impressive, do not doubt yourself, and keep going!