Some days ago I posted this same image and received some helpful advise, here is the repost with the suggested (hopefully) improvements!
For this one
Mark IV
600f/4+1.4TC
f/7.1
ISO 1250
SS 1/125sec
Tripod
Manual flash @ 1/32
Clone some offending leaf on lower part of frame, remove the flash catch light on the eye and also remove the excess of sky from the eye.
Run NR on BG and resized for web.
Hi JC, missed the original, but I do like the various colour mixture of the yellow's, black's and grey's. Pose looks good, and that BG is nice and smooth.