I'm not really used to making tuts and this is made while sleepy right before bed so the quality might be a little low. Need a quick one or two day break from drawing cause my workworkwork.

This is a trick I abuse to not waste the grayscale shading that I always do to decide the overall lighting of the piece. Grayscale is very useful especially if you can't just color on the fly because it will give you the idea of how bright the picture or the focus will be and it's much easier to work with a proper lighting than to fix a mistake.

On the step where I changed the duplicated grayscale layer to orange, it's because the shadow I picked for the picture is red. You can also go with blue if you want to go with blue. It depends on what you feel like using as the darker color.

I will be making a more basic tutorial when I have the time but I will likely make one on how to do quick shadow on the piece after this step or doing shiny metal first.