It all starts with a plan of the space. This can be a plan you do yourself or an Architects Drawing. Any supplementary drawings that you may have such as sections, 3D renderings or concept sketches will also help to convey the space.
As you make your journey through the kitchen magazines collect together tear sheets, and examples of the moods and styles, that best suit your vision. If there are particular floor and wall finishes that you find inspirational bring them along as they can form part of the overall pallet. All of the materials need to be viewed together to ensure that the scheme works in the wider context.