1997 Honda City
Series 3 EX Sedan

 

Depends on how bad it is.
If its really light damage you can simply give it a light wet sand then polish/wax/

If the damage is deep but the base coat is ok you may be able to wetsand then Clearcoat. then wetsand/polish/wax

And worst case, if the Base coat is damaged you will need to completely repaint. I have had decent luck with Color match paint but it all comes down to how much time you put into the project, spray paints can look close to perfect if you take the time to do it right but they never last as long as a quality professional job.

 

I just made a video on this using the roof of a car.

 

Good video. I hope you will add a part 4 and 5 getting it wet sanded and polished out. Should turn out pretty decent. I would say most likely it will look perfect from 10-15 foot away and unless someone is looking for flaws wont see the damage to the base coat.
I really like these 3M foam pads for sanding, Also your finger starts cramping pretty quickly when spraying so these sell the little triggers that snap on to the spray cans.

Looks like it could have used a bit of base coat sprayed as well but honestly that just complicates things, the color may not match perfectly then it may be smooth but will stand out more than just some slight damage cleared over.

Overall good work, hope to see the finished result.