Brick Pattern Won't Display for User Material

[K6Rendering]

Apologies if this has already been asked, but can anyone help me get the tile I imported as a material in my user library to display as a brick pattern? I've imported a 3x6 marble tile, and selected the Pattern Type as Brick, but when I display it on the wall in my rendering, it only displays in a standard tile pattern. Is there something I'm missing? I've been all through the New Material dialogue box, but seem to be missing whatever it is that will allow this to display properly. I'm attempting to add it as a partial wall covering, and can't find anything in that dialogue box either.

Thanks for any help!