1540 - The image is underexposed, noisy and out of focus. You would need a greater depth of field. If it were all in focus, I'm not sure but you may also have an IP (Intellectual Property) issue with the car.
4215 - Noise and lack of focus - probably caused by camera shake. The movement is really noticeable in the city lights.
5689 - Overexposed, trees out of focus and the out of focus plants in the foreground are quite distracting
3047 - Noise and out of focus. (Really unfortunate because that is a cool shot of the jellyfish.)
1163 - Exposure issues (just need to lighten the shadows and darken your highlights) and straighten your horizon
4790 - Noise and artifacts (the small dark dots in the water should be cloned out) and I would also remove the jellyfish trails on the left of the screen. You may want to also lighten the shadows a bit on this one.
Take a look at some of these resources that you might find helpful:
Take a look at your photos from 100-200% magnification and some of these issues become very clear. I think several of your photos could be edited and resubmitted.
Good luck on your future submissions.
Thanks for the information. When I was resizing them to upload them in the post I did saw the blurs and noises, I figure that was the issue but I want peoples in put anyway.
For 1163, I try to leave as natural as possible because I have another one that was rejected because it has adjustments and the rule is to be natural for the buyer to do the adjustment they want. My questions I guess would be until what point the adjustment to fix a photo become a rejection for that rule?
Sorry if I dont make sense lol
Why are you resizing your images before uploading them? They should be submitted in the largest size possible.
As to image 1163, don't confuse "natural" with straight out of camera. If you're shooting in RAW, which is highly recommended, every image needs some basic edits. I dropped your image into Lightroom and took about 30 seconds to do the following: straighten, reduce highlights, lift shadows, increase vibrance, increase contrast, apply a linear gradient to the sky to darken and dehaze, set a white point, set a black point.
Thanks for the info Jill. I dont resize to upload them in the stock program. I resize them to put them in this post because there is a limit of 47 mb size. I do shoot in Raw and those photos i submit were my first done in lightroom. The 1163 I submit was brighter like yours. I dont know why it looks darker in this post. Nevertheless yours is better lol. Thanks for the insights.
Technical issues aside, I think the toy car is likely to be an IP problem. The toy maker (Mattel, Inc.) is very unlikely to give you a property release to use that image commercially.