Hi Maycoll, your image is underexposed, has a lot of noise / grain and the horizon is not level. This should be fixable in post processing, especially if you shot in RAW format. I quickly played with your image to give you a bit of an idea, but you would get better results from editing the original.
Good luck with your submission.
To learn what Adobe Stock accepts, compare yours with Stock Inventory in this keyword category.
Read these links:
What are you trying to capture - the water drops? If so, they are way too small, and the focus isn't good. (On the water drops.)
Esta tiene todos los problemas tecnicos por los que los de Adobe rechazan una foto yo miraria bien los link que te pone Nancy O'Shea suele ser muy acertada