Fixing small dents isn't any rocket science. It can be free of cost if you know some tips and fix it yourself. Some situations can be tackled with the listed down points:
Slightly wrinkled surface: A rubber plunger can easily resolve the wrinkled surface. The edge of the rubber should be wet and after placing it on the dent, establish the suction by pressing down on the handle and pulling it back. It may take a couple of tires in the process of recovery.
Small dents in a steel part: Hammering the small dents can be a solution. By placing a flat piece of metal on the outer side of the vehicle and banging the dent from the underside with a flat-ended hammer. Try not to bang the surrounded area and bang only the underside dent or you'll end up with few more bumps to deal with.
Very small dings or chipped paints: Fill them in with glazing putty, which is very easy to handle. Use a putty knife to apply it, following the directions on the package, and then prime and paint the area.
Paint discolours or scratched surface: Always start by removing the wrinkled surfaces or surfaces with a dent. Give a touch up to your car with the prime and the paint.
And even if these methods do not work, you are welcome to raise this question:
Where can I find an auto body repair shop that does Denting and Painting?
If you want to ensure that you have a flawless Denting and painting, find a good auto body shop to get your car back to pre-damaged condition. Demyto.com ensures with the work done professionally having a reasonable rate and prevent you from struggling through a learning process.