Doing up' is a phrase used to describe the process of renovating or restoring something, usually a building or a piece of furniture. It involves repairing, cleaning, and sometimes replacing parts of the item in order to make it look new again. LACING is one of the techniques used in doing up, which involves using string or rope to tie two pieces of material together. This technique is often used to secure fabric or leather when making furniture, or to attach panels to walls.