Clearly lots of love and attention gone into this mini and it looks really nice. I love the detailing you've added to the armour and the freehand on the banner is very strong. For me, to push a higher score I'd be looking for smoother paintjob, more contrast on the face and a little bit of a lighter touch on the freehand. In this I mean that some of the lining and blend transitions on the them are a little harsh.
Overall a great job ;-)
Will