Drawing on a Pen Display - Stylized Style

Photorealistic pen tablet screen. Must not be monochrome. About 70% of the coloring is done. tight shot. Lifelike first-person hand holding the pen tablet and pen. The line art has been extracted from the original image. Unfinished coloring. The original image is reproduced on the pen tablet in an unfinished state. Portions of the line art have been colored with the same coloring as the original image. The pen tip is touching the tablet screen. Refine: name the rendering engine you want (Octane, Cycles, Unreal) for sharper output.