Making Method: Step One---set up your work area! Find a flat surface as your work area. Lay out all of your materials in front of you. Step Two---Mix your plaster! Stir in the water until it dissolves into the plaster mix. Step Three---Cast your foot step mat. Pour the plaster into the mold after mixing the plaster smoothly. Step Four---Decorate! Decide what colors you want to use and start painting.