Take accurate measurements of the space that you have available. You should take straight lines as well as diagonal ones. This will be invaluable when planning irregular shapes in your garden. Find out what type of soil you are working with. Clay soil, which is grey, is heavy when wet and has a tendency to crack when it is dry.
Sandy soil feels gritty and loose.
Acidic peat soil is dark brown and flaky. Each soil type will suit particular types of plants and not others. So, when you talk to your garden store retailer it is imperative that you can tell him just what sort of earth you are dealing with. You should also make note of the slopes and gradients of your yard. Be aware also, of the passage of the sun and the intensity of winds on your proposed garden area.