Clean the wall surface thoroughly before you begin to sketch the mural. Consider applying a fresh coat of paint before sketching.
Decide on the design or figure that you would like to sketch. It's best to sketch out a small-scale rough draft first.
Determine the necessary supplies. For instance, you should decide which types of paints and glazes would work best with the mural.
Create a grid over the small-scale rough draft. Draw a corresponding grid on your wall space. There must be the same amount of squares on both grids.
Transfer the small-scale image onto the wall. To do so, sketch exactly what you see in the small-scale drawing onto the wall grid.
Fill in forms and figures with white paint. White paint allows you to build the depth and strength of your color choices.
Seal the mural with a water-based varnish. Start in a single corner and apply evenly to the entire mural.