Very nice job with all the different NMM colors; beard looks neat as well. Paint seems a bit thick, but that may be due to the pics being so close-up. Also the slab he´s standing on looks like concrete rather then stone, it´s too even. Some more irregular material would help here.
I would actually like to see this pictured a little less close up because I bet what you have done here looks super nice to the naked eye! Love the celtic knot on the cloak. Really nice color graduations and highlighting. The NMM on the chainmail is great. The NMM on the plate pieces looks very nice but could perhaps use a little more contrast and smoothness. I think my favorite thing are the freckles on his nose. Well done!