Use wax fill stick crayons to color over the top of the sanded area. Some of the crayon will attach itself to the filler and the wood. Use thick paper (we used a business card) to rub the wax into the small pore holes or irregularities. The paper will push the wax in and remove the access from the surface at the same time. At this point you should have a smooth surface. Check with your fingertip: run it lightly over the area to feel for areas that might need more attention.
Mix brown-tone acrylic paint with a little white if needed to lighten, and black if you need to darken the color. Red, yellow and orange may also help achieve the correct wood tone. The first color you brush on will be the base color; this should be a middle tone of all the colors that make up the finish. Next, mix up a couple different tones, some lighter and some darker, to apply "grain" streaks in the area. Remember, you are trying to trick they eye into believing the area is wood, so take your time and be sure to layer the colors for a more realistic appearance.
When the acrylic paint is dry, spray two or more even coats of clear lacquer over the area. It is better to spray in light coats so the lacquer won't run. A trick to matching the sheen is to start with a sheen that is slightly shinier than you need. After it dries, rub the area with 000 steel wool to bring down the sheen to the desired shininess. Be careful not to rub through the clear coat and into the color layer.