Aspiring actor head shot! Comments and Critiques welcome.

Hi,

So I was asked if I do head shots. I don't normally to be honest but it is something that I have wanted to do for a while. I already had the gear, I just never had the interest off people. Then a friend asked me if I was interested in photographing him and his friend for their agency. They are both aspiring actors and needed head shots, so I agreed.

I used a canon 6d, canon 85mm 1.8 lens, 3 yongnuo 560iii flashguns, and a cheap black backdrop.

As I am still learning, my question is, is this a good photo? Is there anything different I could do? Deeper Depth of field maybe? (although I love the shallow depth of field myself). Or more contrast? Or less?

Thanks

All the best

Keith