Learn how to mix colors
This is something which comes after a while, after you have grasped the basics of drawing that you may switch to painting and working with colors. While there is a whole structuring for this activity, what you will need is to learn about the color palette, to see how each color looks on all different sorts of papers and later on canvases and then when you are done with this stage, you can learn more about the different sorts of colors.
There are two classes of colors. There are the basic colors and then there are the colors we get when we mix up the basic colors. The basic colors include white, red, black, yellow and blue. All the rest of the shades are the mix or either two or more of the base colors. From purple to magenta each one of the thousands of shades you will be able to create just experiment as much as you can with mixing up the colors.