I'm trying to be an expert for choosing colors and combining colors. So I found a tutorial making schools sets icons and for a start, I am making a pencil but I'm not going to follow the same exact color on the tutorial. I'll do it my own with a touch of red with the flat pencil vector as an exercise for me, I am choosing the monochromatic method of color theory but how do you know exactly if your lighting or shadowing of red on the pencil is correct or industry standards? I am having the hard time understanding people I encountered in youtube on how they choose a light or shadow color of the main color. If there are any question please free to ask. Thank very much.
My Work:
The Tutorial I'm following:
As you can see how the tutor made the pencil yellow color beautifully from lighting to shadows.