I will take some exception to the above advise.......
1st, if you can see a deviation in the body panel, I would contact a paintless dent repair person who can easily massage the panel back where it belongs eliminating all visual defects.
then, with the panel raised back to original height/plane, engage in paint repair which might only require a polish or if the scratch has penetrated below the clear coat or the through the base coat (color), then apply paint correction procedures....it will come out flawlessly!
Member: Never trust a person over 40 who drives a Chevy club
Flatheads ain't so bad!
Certified backyard mechanic I & II