In a monochromatic color scheme, only one hue is used
The hue is lightened by adding white ti it (tints), darkened by adding black to it (shades), and dulled by adding grey to it (tones).Additionally, pure black and white may be incorporated into a monochromatic color scheme.
Start with finding an image you would like to paint. You will have to adjust it in Photoshop to break it into values and resize it.