Cel shading on metal

[arctic field]

I’ve been trying to shade some of the character especially her arms since they’re metal but I wanna do it in cel shading and idk how to do that for metal

[maiden burrow]

So far this is pretty good! I suggust using the add or color dodge layer and picking the color of the light source and coloring in where the white spots are :3

[arctic field]

I’ve added color but I still don’t know how to render her arms as metallic like