Before now, one had to gather all the materials to do an art on a canvas; you must first get acrylic paints. Not just one but several colors, or the four primary colors. There are many brush sizes, styles and brushes for methods. You must consider. You must buy. Next depending on the size painting you are going to do, you need canvas. The cost for those materials is expensive. Now we have the option of using photo shop or such software to draw, paints, to add any color, add any style, depth, hence to add your personal touch. You can be in an air-conditioned room working at the computer.