A lot of people wonder how designers achieve to show their projects before they even exist. After building the model in computer software, you apply materials and lights based on what you want to show to your client. This sounds very easy but there is a lot of time and experimenting to make it come out correctly.
Here are some pictures taken before and after the 3D model is rendered. The first is the 3d objects themselves, second has the applied materials to each of the objects with lighting represented by yellow lines and the third shows the complete render. Enjoy!
Software used: 3DsMax, Vray