一张铅笔素描（精修风格）

视觉设定：A pencil drawing of [Your character], with detailed lines and shading on white paper, capturing the energy and strength in his muscular body [with element effects] around the character, in a dynamic pose, tattoo design on paper, manga art style, dark background, high contrast, strong shadows, light and shadow effects, black ink drawing, dynamic pose。工作流：生成多张候选后再做 best-of-N 筛选，可避免一次性出图的不稳定。