First get some art supplies. It could be markers, color pencils, paint, whatever you want to use. You can use paper, canvas, or any item that you want to mark on. Then close your eyes and try to meditate for a few minutes. What shapes, colors, images do you see in your mind's eye. Then open your eyes up and choose colors you seen during your meditation. If you saw colors during your meditation, use those colors in your art. Then start to draw, paint, collage, ext what you shaw during your meditation.