My wife got a little door ding at the grocery. I've always been interested in paintless dent removal so I got a cheap starter tool kit to work with. Watching online videos, I've noticed that they recommend using a reflector board to find the imperfections and to evaluate your repair. Searching online, I see the silly things are pricey for what they are. So hopefully this will save you some time and money.

Step 1:

First you print off the chart in preferably a laser printer ( ink isn't as reflective) but if you only have an inkjet give it a try. It will need a heavier paper stock. I used 199gm/m2 letter sized paper.

Image is shared in my one drive. https://1drv.ms/u/s!AhJB7wEQCLdggRAhbuSQqnaZgELw?e=vNy8mk

Step 2:

Next you will need to get it laminated which makes it really reflective.

Step 3:

It's been too cold up north here lately, so the car hasn't been washed. You can visibly see the deformation of the door ding though. This weekend should be nice to give it a try for real.