We just got our first hardscape job..Installed a new lawn and beds and he's giving us the patio assuming the price is right.... Customer wants flagstone patio bordered by pavers. On the outside edge of the patio there will be a planting area and after that will be a free standing wall. It will act as a retaining wall for 1 to 2 feet, then the top 2 to 3 feet will be a double sided decorative wall. I think it's called a "bench wall." Still have to decide on colors, etc. What's the building process for all of this. I've done a small flagstone patio before, but the customer already did the base. We just finished the layout. Is the base the same as for pavers? What's the setting layer if any? Should we hold in the paver border with edging?? What's the base for the wall? Are there mechanical fasteners or adhesives or are the blocks self stacking/locking like retaining walls? Any advice will be greatly appreciated. This job could lead to many others..