Hey Bob,
I really like the sky isolation....but do have a question.....did you use a polariser? I ask because the blues usually go this dark....when it has been super polarised. I do like how you framed the curved one between the taller 2 so only recommendation is to clean up the LR edge of the stray leaf and perhaps even the 2 leaves making the v next to them......if you are OK with such things. I think taming those dark blues a bit will bring this up another notch.
I gotta say, Roman hit it on the head for me. The blues feel overdone and the LRC could use a little clean up. Every thing else is well balanced and composed.