It is a bit of a ugly face, but tremendous character. The light angle well to the right has caused some shadows as Humberto mentioned, but has also helped play up the detail and texture, esp. in the neck/throat area.
I would try some subtle shadow work to try to soften the shadows.
If it were mine, I would crop down from the top a bit. I am not bothered by square crops, esp. when you have the very strong diagonal from the bill.