You need to set up a warp that looks like this. There are four ends in each of the tan borders. You can count fouteen black warps and fourteen whites. As the warps are always floated in pairs, it is best to think of the set-up as being seven pairs of black warps and seven pairs of white. The warps in shed 2 will be controlled by a shed stick and those in shed 1 will go into heddles. The black warps in shed 1 will form the background for the white motif.