i want to use it in app, make muscles to have more definition and easy to fill with color or highlight. Emphasize a cohesive composition, cinematic lighting, high-detail textures, clear depth separation, and polished art direction. Use the "Bold" style direction.

The image shows a drawing of a man standing in front of a white background. He is wearing a tank top and shorts, and has a determined expression on his face. His arms are crossed and his hands are clenched into fists, as if he is ready to take on any challenge. His hair is short and dark, and his eyes are focused on something in the distance.