What is the process for skim coating concrete walls to achieve a smooth and even surface?

Skim coating concrete walls involves applying a thin layer of a special coating material, such as a cement-based compound or a plaster mix, to the surface of the wall. This layer is spread evenly using a trowel or a putty knife to fill in any imperfections and create a smooth finish. The surface is then sanded down to remove any bumps or rough spots, and may require multiple coats for a flawless result.