Things You'll Need
Instructions
Establish what type of layout you want to build. Determine if you want something toy-like and simple, elaborately realistic, or a compromise layout somewhere between those two extremes. Decisions should take into account skill level as well as the amount of time, money and effort you want to spend on the project.
Figure out what type of operation you would like from the completed layout. Visualize the scenes to help make this decision. Envision long trains speeding down straightaways with few switches or a more complex layout with more switching and traffic management. This helps decide what real-life subject to choose for the layout. If you want the layout to be a replica of a specific type of real railroad, or even a model of a particular life-sized rail system. Find information on real railroads at the local library or historical center.
Research construction techniques for model railroads, including terrain construction, miniature building siting and control system wiring. This is important to the final design of the landforms and terrain features of the model, as it helps you figure out how to arrange terrain to mesh well with the requirements of the model railroading equipment.
Make concept sketches for terrain features and initial schematics for building and track layout. When you are happy with the basics and have made sure that you can build the terrain and fit in the necessary electronics, draw up a final set of schematics with greater precision and detail. Use this design as the guide in building the actual layout.