Refused for technical reasons.

Apart from DOF, good Stock photographs begin with proper lighting.  IMO, the lighting isn't working to your advantage here.

Front-lighting is like your great-grandmother's fine china  -- used carefully and brought out only on special occasions.  Front-lighting suppresses textures and details from the foreground and thereby de-emphasizes your subject.  This technique can work sometimes but it's not typically used in Stock photography.

DOF is too narrow.

Only one flower is in focus (arrow). I would expect the tip of the flower's branch (cloud) to be in focus.

You have also chromatic aberration.

And there is a certain noise level, respectively there are artefacts (caused by sharpening?).

The branch of flowers, which is meant to be the focal point of the image, is not in focus; additionally, the blast of light in the background steals attention away from the flowers as the eye is always drawn to the brightest part of an image. Cropping tighter could somewhat lessen that problem.