Explanation:
You would want to create the 2 main diagonals (the 4 square ones) matched up with the same teacup or saucer.
Then once that’s done, find the lower diagonal square of Position A (which the upper diagonal square is position F) and put in the same saucer in F as you did in A. Do the same thing for Position B and H. They can be random teacups for those 4 positions, but not for C,E,D and G.
Match the same saucer for the upper diagonal square for Position C (which the upper diagonal square is position E), but MAKE SURE THAT THE TEACUPS MATCH. Do exactly the same for positions D and G.
Then, do the remaining squares on the outside matching the saucers but at the same time making sure that the teacups match, as this is crucial.
Once you have done the outside, this should be done and if they are still mistakes, take out all the mistaken squares out and re-arrange them with diagonals so they match, although if you did everything carefully and accurately, there should be no need for this bonus step.
By the time you do all of this, you should have a beautiful, satisfying square of 16 saucers and teacups. Lovely, isn’t it?