I did mine after 2 weeks,but I have heard you should wait longer, however the sanding may be harder. I used 1200 grit with a soft pad using plenty of water and a drop of soap.sand until any sign of orange peel is gone. I used 3m micro compound, wash the car with soap and water, then a machine glaze,and finally wax. I used a variable speed polisher at about 1000 rpm. Results were good. Stay away from any edges and don't sand or polish thru the clear.My paint was clear/base.