Mastering the sense of depth and tridimensionality requires a lot of practice. Very different light and shadow patterns can be obtained through skillful alteration of hue, brightness, and saturation parameters, which produces a tridimensional view of what we see.
Distance, on the other hand, changes saturation and color hue of what we see even further. This is known as atmospheric perspective.
As a reference, you need to study photos or, even better, to directly observe your surroundings in real life if you want to understand how light works and apply that to your paintings. Observing and copying from real-world examples is essential to getting confident with these principles.
Besides, I would suggest you to start working in grayscale: this should allow you to build all the values of your painting more easily.
You can see an example of my workflow below.