I just looked at this image, and was surprised at its low score. It is really pretty. I have a feeling it was the small size that brought the score down. If you need help to figure out how to make your images bigger let me know. There is a lot you can do in the save to increase the size.
Right then, joke's on me as I now have to plough through 564 images and bump them all (yes, all of them) up. There'll be a third run through for fine tuning. It's day two now and I'm running late, sorry.