1. The right tools
You will need two rafters, joists or battens, some geotextile membrane, sand paving stones of your choice, cement and posts.
You will need a tape measure, a pencil, a spirit level, a spade, a shovel, a trowel, a wheelbarrow, a rake, a broom, a Mason's ruler, a rubber mallet, an angle grinder with a diamond disc, a ball of string, a board and a hose pipe.
You will need kneepads, heavy-duty gloves, safety goggles, a dust mask and earplugs.