|Greetings from the Critique Club! :)
I will attempt to critique your image on four basic areas. Keep in mind I'm not a trained professional. ;)
1. Composition: The composition is not a bad one, with the tree a tiny bit off center (good) and mostly filling the frame. However, IMHO there is a bit too much sky. A lower perspective and less sky might make for a more dramatic or "full" shot.
2. Technical Details: Your focus seems to be OK, but I wish I had more of your EXIF info to go on. Maybe experiment with different apertures for depth-of-field effects, and most certainly try shooting at a different time of day. The harsh shadow across the bulk of the tree did not add anything to the image, unfortunately. Shoot between 7 and 10 am, and after 5 or 6 pm until sunset. The other times of the day, the sun is just too harsh and creates havoc for your images.
3. Aesthetics: Nice, but with some changes it could be much more beautiful.
4. Relationship to Challenge: I think it meets the challenge well.
Overall, your image has some strong points and some points in which improvements can be made. Keep shooting and submitting and I look forward to your next entry!