What's the best body filler to paint a car

Question

I want to fix some small scratches on my car can you give me some guidance on how I should proceed?

These are my scratches.

Rear bumper

Door handle

Front bumper. Here the plastic has a deep scratch also.

Answer 1

Looking at your pictures, I don't think you need any filler. Just sand down and feather the areas, use a high build urethane primer to fill in any low spots, and paint. If you need a little filler (I highly doubt you will) icing works well for shallow scratches.

Another thought I just had, if the scratches were really deep, you could fill them in/build the area up with a plastic welder, then sand it back down to smooth.