BTW when you preview whatever you are trying to apply a SBP to in the actual SBP filter window you wont see your shape as such . You you will see a rectangular type of shape with teh texture. You have to use that to judge what it will look like on your shape
Oh and make sure you have all ogf teh part sof teh elements grouped but not flattened other SBP wont apply the filter to teh "parts" of teh shape and will just cover the whole thing