The direction of the installed floor can have a bearing on the overall aesthetic. As an example, to give the appearance of a natural timber floor, the planks can be laid running against the supporting under floor joists, in the same direction as the original floor boards would be. Alternatively you may wish to run them on an angle or in a parquet floor feature, such as herringbone, which will provide a more bespoke appearance.
The stone tiles can be utilised in a number of ways including straight laid, on angles and with inlay strips. For additional ideas, see the Design Floors hints and tips. You should look to discuss this with your installer for full options and advice.