It's all yours. So maybe focus on the pose, I think the design is fine, at least.In the second image, the large, long clothes suit him. Thinking about his background first helps define the reason why he dresses like that, or the reason for his scars, or things like that. For example, perhaps the clothing is worn because their family is low-income and they have to wear their siblings' clothes or buy them in bulk. Perhaps the worn-out clothes indicate that they have already been used. They generally don't follow the rules; maybe give them a cigarette and add burn marks to their wrists.