Your focus is not enough, The background is blurred. If this was intentional, it doesn't work. Therefore this is a quality issue!
Have a read of this. It's a brief guide on quality:
Hello! Nothing is in focus. Highlights blown out way too much. Chromatic aberrations too.
Composition is cluttered.
Also you might want to reconsider this subject as Stock has over 34 million trees already. https://stock.adobe.com/search?k=tree
Sales potential for this is very low.