Depending on how good you are, you can spot in the areas. Well, as i said earlier, it really depends on the color as to the difficulty. If it is a solid color, spotting in is easily done and then reclear. If it is a metallic, people sometimes have a hard time making the spots blend, and usually can end up with a lighter "halo" at their stopping point of their blend. Being that the trunk is a small piece, and you have only some small spots, i would recommend recoating the areas first, then doing a complete recoat of the entire lid, then reclear, just to be safe. You should be able to fix it with minimal paint usage and coats. Most of the time, once again depending on color, you should be able to get away with 1 blend coat over the spots, then an overall coat. So it will have 2 on the spots, 1 on the entire lid. If you are spraying PPG clears you will want to do this, as PPG clear adds a shade of darkness with each coat of clear. Dupont does about a half shade per coat of clear. Just depends...