For the sword I would just keep it as a simple metal sword. Maybe add some blood splatter to it. A flaming sword seems weird for that model.
For knight on the horse. It looks good, it could use a bit more contrasting colours on it. Picking out some of the metal parts in a bronze or gold colour would go a long way to making the model stand out more. Maybe a tad more highlights.
I used to roll the dice, Feel the fear in my enemy's eyes
I'm afraid there's no authoritative source for thinking you're an asshole