There is no clear, sharp focus in any of these pictures. View it at 100% to 200)% in Photoshop, it should be obvious. If you still can't see it, I suggest photography classes. Sorry, getting sharp focus is basic lesson #1.
I understand the problem now. Thanks 🙂
1) the flower is not in sharp focus, and the WB (White Balance) is slightly too blue. The composition is also not very attractive with the tire in the background.
2) again the flower is not entirely in focus and the background is messy
3) same as #1
4) same as #1
Consider that there are already millions of floral images in Adobe Stock; yours need to be unique and technically perfect to be accepted into the database. Flowers are a great way to practice your photography skills, but I wouldn't advise spending a lot of time on them as a way to build a successful stock portfolio.
Thanks a lot Jill, I need to practice more on focusing I suppose.
In addition to all photos being out of focus and the white balance of the second image being off, the third and fourth images are slightly underexposed and the fourth image shows signs of shake.
Photographer and Nutrition Author
Now that you mentioned it, I do see a slight sign of shake in my fourth picture. Thanks Jac!