Alright, having seen your drawings I REALLY want to pitch in, too. Unfortunately I won't have straight references, just an idea of a hairstyle and general description for the character.
So... The character I'd love to see drawn is Reuel from The Essence of Villainy. He's a village boy, almost 16 years of age, and he has a habit of dragging his wooden sword along with him wherever he goes. He is fixated on the idea of being a hero and gauges every moral issue on a black-and-white scale.
So, for the hairstyle... it'd be like in the image below, but spikier(within moderation). Very teenager-esque, short(er) and spiky hair.
For his face.... imagine an idealist who's always in a bad mood. Or, rather, an idealist who's always critical of everything. Everyone else is just wrong most of the time. That said, he isn't irritating... At least, he won't be eventually. I'd like the drawing to focus on his redeeming factors.
As for his clothes, he wears a light brown shirt and straight, dark-coloured pants. His pose shouldn't be too confident, implying that he struggles with some mental concept or the other. That said, he is definitely the most courageous(or foolhardy)) character in the cast, bar none.
And the link to the story is here: https://tapas.io/series/The-Essence-of-Villainy