The sky is blown out, but all the rest is underexposed.
The picture is not sharp and too noisy.
Hope that helps,
Michael Niessen - Photographer, photo-editor, educator
Just a word of advice about your subject. You're competing with 21+ million perfect flowers in Adobe Stock's database. Even if this eventually gets accepted, you probably won't get many sales from it. 😞
Focus your camera on subjects that will make more sales for you.
Good luck with your next submission. 😁
The composition also isn't good. The sky as well as being overexposed it also unbalances the photo. The eye focuses on this rather than the flower. As @Nancy OShea said, it's much better to concentrate on other subjects. There is an over supply of flower pictures!
If you are photographing against a bright sky, you need to use a flash to counter this. The branches are completely black, with no chance for recovery. The blossom bears not enough contrast. You could have zoomed in more to get more of the flower and less of the sky.