Two ways to get chipped paint. Spray your silver first. I take a hair dryer to dry it faster. Then apply the salt to the silver area. Dry that, then spray your color. Dry that , then rub off the salt. If you are going to use tape just spay your silver. Dry. Spay your color. Dry. Then put the tape over the area you want to look chipped and pull it off. The faster you pull the more paint that will come off.