Please accept what I say for whatever it is worth. I see this image as having three main flaws. One, the main subject is neither centered nor placed according to the rule of thirds. This image is perfect for using that rule. Two, The background has too much uncorrected noise. Noise would normally be reduced. Three, I have no idea what the main subject is other than being a bubble. The bubble undoubtably has something interesting inside, but if the viewer cannot figure it out then the point is lost.
What is it? Where is it? Is it hanging in space, is it supposed to be the moon? Just some hint of what you are trying to achieve would make a great photo. Eg put a background of the night sky with a few stars.
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