The art intends to document an event, or a governor's achievement or something related to politics is a portrait with specific elements such as the precise recreation of the events, sometimes praising and modifying some points of what happened. Depending on the event portrayed, the artist can be direct and just retell the historical moment. It's not the kind of canvas that is open to be enjoyable (dark themes, hard light, direct composition). On the other hand, the commemorative art intends to be fun, to portray the event to show the victory of something or someone, with bright colors, a soft light, and the composition of the canvas follows the idea to put the audience among the characters portrayed. I think that documentation art becomes a commemorative one when the events and the person who fought there became legends when they change something in History.
A documentation piece is one meant to provide specific information about something. A commemoration piece is meant to celebrate something. If a place or time that's been documented by art becomes very important in history, that piece will also be viewed as a celebration of it.
I love how detailed it is, I suggest if you want to further improve is to learn how to loosen your poses and any small things like clothing wrinkles, facial expressions, small details such as tone in the body (not that you don't already have an understanding of it). if you plan to color it, make sure to add shadow and depth so that it doesn't come off as too busy and messy. I'd say this is a solid 8.75.