My favorite part of this image is the use of framing. Not only is it the arch, but the red poles in which the subject is leaning on.
This image remains in my top 5 because of the unsymmetrical balance in it. I like all the circles and how the sun creates shadows on one half, but not the other.
This image remains in my top 5 because of the lighting in it. My favorite part about this image is the sun barely peaking over the upper-middle part of the flower.