One of the advantages of using acrylic paint is that is dries very quickly. This makes it easy to use. As it is quick-drying you can easily paint over it and correct it if you are not happy. You can paint thin layers of acrylic paint or thicker layers to get a 3D effect. Add a few drops of water to the paint if you want it to be more transparent. Blend some acrylic medium with the paint to make it thicker, more glossy or matt depending on the type of medium you use. When your painting is done you can fix the colours with an acrylic spray/varnish. You can buy the tubes of acrylic paint separately or in a set with several colours included.