Ventiliate the kitchen by opening all windows so the lacquer fumes will have a way to dissipate.
Place plastic tarps or newspaper on the floor, sink, stove, refrigerator and any other area you do not plan to apply the lacquer. Tape them down with painters tape. Do not use a canvas painter's drop cloth because lacquer can seep through cloth material.
Put on gloves and old clothes.
Read the instructions on the lacquer spray can. Spray some lacquer onto a piece of cardboard to get a feel for flow and the distance of the spray.
Spray slowly, but do not concentrate too much lacquer in one spot. Keep the spray even and keep your arm moving in a flowing rhythm until you cover the entire area you planned to lacquer.