Raised Plaster Large Mystic Stencil, Paint Stencil..Raised designs are EASY with our beautiful stencils! Use common joint compound (also called Wall Mud). It comes pre-mixed for you in a bucket and is available in the paint section of most home and hardware stores and acts just like frosting. Just get some on a small trowel or putty knife and spread evenly over the top of the stencil, lift the stencil and there's the design! .