Get the level correct with a lage piece of 2x2 put a fall on it on your land area running away from your house - put a top membrane down a permeable one - then lay a 5 - 1 cement and sand dry mixture as the base using a good -rake lever each time for each flag then use a rubber hammer to hammer the flag down after they are all laid - brush in a dry 3-1 cement sand mix - the condensation over nights will set the cement and stop weeds between the flags appearing afterwards ........Has anybody ever laid their own flags? If so how hard is it? Labour costs so much for jobs around the house.
It's not hard if you prepare your area like I stated above use your 2x2 all the time on two rows to check the levels as they go down like a jig saw ....preparations are the key.....