A classic partial view of a sunflower, and by the looks of it a very well captured photo. the exposure is spot on, and the details and structures in the petals are well preserved. The partial view is good, it adds the appeal to this photo.
I do think this photo falters a bit in the post processing and composition; I think it could use a boost in the red levels, as well as a bit more punch in the sky, to emphasise the contrast.
As to the composition, the center of the flower almost coincides with the horizontal centerline, but not completely. Also, the edge of the image clips the outer periphery of the flower. I think placing it more extremely towards the top right, and allowing a bit more space below would fix that, as well as emphasise the diagonal.
Nice image. Close enough to be intimate but, not crowded. This a nice sense of light that's not hard on the eye. I wonder how it would look with a warmer but less saturated blue for the sky. Good luck with the farm.