My Ryan PT20 1/6th scale scratch build is covered in chrome Oracover. After covering I used steel wool to take the "toy" shine off the chrome, and leave it looking like buffed bare aluminum. By using masking tape to tape off panel sizes, and alternating up and down strokes with forward and aft, I could create the effect of different panels. After this I used a sewing wheel used to mark material to create dimples on the panel lines, which look like rivets from about 3 feet away.