This is not a liquid paint. A protective skim coat forms on top of this paint. It is easily peeled away or removed with a paper towel or blunt knife. Surface to be stenciled should be clean and painted with a non-glossy paint.
Different fabrics absorb paint differently.
Practice on a separate piece of your fabric. Practice stenciling on paper. These prints can then be taped in place to check design placement and color. Lightly mark the area to be stenciled to coincide with guidelines printed on the stencil. Hold brush as a pencil with bristles flat on surface and handle straight.