A male Persian engineer in ancient robes sketches a yakhchāl design on parchment. Render in a comic book style, focusing on the bold outlines of the engineer’s exaggerated expression of concentration. Use dramatic shading and vibrant colors, with dynamic angles showing the parchment prominently. The setting is a detailed, ancient study filled with scrolls and tools, with intricate textures on the character’s robes and tools, inspired by Jim Lee’s detailed anatomy and environment work.