Your comments please

[Yisehaq]

Hi,
As I was roaming in the forest this weekend I came accross this monk who came out of the monastry nearby for enjoying the sun and I took the opportunity.

I took the picture in a raw and all parameter setting to 0. Thinking I could get some assistance in post processing . As there was very low light I used ISO 800 and I think this picture looks a bit grainy. I would have like if I can make any good out of it. Therefore, I have put it for your comments.

I shoot from different sides (learning from the Podcasts ) but I think this will be representative.
Awaiting your comments.
If possible hope to make it better picture otherwise, the learning process will continue....