To make your car shine from the inside out, start by washing and drying the exterior, then use a clay bar to remove contaminants and apply polish and wax for a glossy finish. Clean the wheels and windows thoroughly. Inside, remove clutter, vacuum all areas, and clean the upholstery. Wipe down the dashboard, clean the interior windows, and freshen the air with a deodorizer. Regular maintenance, including bi-weekly washes and monthly waxing, will keep your car looking pristine.