Do you have one of the One Block Wonder books? Either of these will explain the method of cutting and putting the quilt together, and how to work out how much fabric you will need, and other bits and bobs you may need.
They also explain how best to choose your fabric i.e. pattern repeat size and colour combination.
Once you have cut your fabric and put together the hexagons, you can then decide how you wish to put it together for a pleasing effect.