I would like to use this in a card game I am making for myself. I can't pay you as this card game is not for profit, however, I can identify you as the illustrator. I will show you a copy of the card upon request. With your permission, and if the production of these cards it cheap enough for me, I will give you a copy of the actual printed card. Message me when you get the chance.
I've been using this image as my online avatar for over a year now. I found it by chance and never really looked into where it came from, what it was for, etc. In fact, this image has defined quite a bit of my play-style in medieval/fantasy games and I even started writing a bit of lore for him (He's known by the name of his rod, 'Shieldbreaker')