I try not to color for more than 20 minutes without shaking the stiffness out of my hands! Look after your hands and wrists! Before during and after you color, make sure you stretch your hands and wrists. Keeping your fingers and wrists locked in the coloring position for too long can lead to stiffness in the joints, aches and pain.
Working in layers, you can create a lush, soft effect in colored pencil that can create truly stunning coloring book pages. In this post on the Craftsy blog, the artist offers a tutorial for how to build layers slowly, with one color at a time, allowing for better control over value and consistency of color. A little bit different than working with several colors at the same time on your piece, the results are luminous and stunning.