Erm..! is this bad or..

GENUINELY don't know if this is good or not. like i know it's still a sketch but the arms and the motorcycle feels SO off like i just can't feel the ambience that I wanted to show in this sketch. if there's any advice on how to fix this plus the proportions and the vehicle that'd be so amazing😭🙏🏻 (also the application is photoshop!)