Examine images at 100-300% magnification to see the problems.
Fix the problems if you can. Otherwise, discard or set-aside the image.
Compare your work with current Stock Inventory. Adobe Stock contains 26 million flowers in every size, shape and color. Is yours really better than what's represented?
@Akata , After looking through your previous posts I'm left wondering how you inspect your images before submitting them? Although it's no trouble to tell you why they were rejected, the goal is that over time you learn to spot these flaws yourself so you don't go through the work of taking and submitting photos only for them to be rejected.
It would also be helpful to include the exit data when you submit photos, it helps pinpoint a solution sometimes.
Exit data is the shutter speed, aperture, iso, etc.
Do you zoom in on the details to check for sharpness and noise, etc? That's where we are spotting most of the technical flaws, and Adobe reviewers are definitely doing that as well.
Out of focus, lacks contrast, artifacts. You used the same soft image and applied multiple filters to change the color. Filters & effects are desirable in Adobe Stock.
It's possible that the other Adobe Stock contributor that you referenced did not submit all of the flower images simultaneously, so the Moderators didn't notice that they were alternate versions of the same image. If you compare hers side by side with yours, the differences in image quality, specifically sharpness, are quite apparent.