Hello,
As others have mentioned, you have focus problems. The reason for this, I'm afraid, is the quality of the lens I suspect. I see from the metadata that you have a Canon Rebel—a good camera—but the kit lens that comes with it is of poor quality—this is connected to the price, of course. So, this results in the subject - your owl, caterpillar, etc.- not being sharp. If you want to continue uploading stock photos, you should try to get a better lens. Sigma for example makes lenses with a Canon mount. This will take some research and reading. This would be my recommendation.
I am assuming that you are using the lens that came with your camera judging by your photos.
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