Installing a Tuck Shop Shed onto an uneven base

This tuck shop shed measures 2.4m x 2.4m, or 8' x 8'
It has a heavy duty floor which has been levelled onto an uneven surface using legs that are glued and screwed into position.
Our tuck shop sheds come with:
A single Joinery door with a lock and latch set installed (can be a double door if required)
Continuous hinges on hatches and door
Serving hatch with twin doors, outward opening, usually half the length of the panel (a 3m long shed will have a 1.5m hatch)
A Detachable shelf the full width of the hatch, 300mm deep