The link to the video webpage of the spray painting tutorial technique is as follows:

1. First, clean the car body with clean water, level the sandpaper with a skid, and then polish the scratched edges with water. Apply until the edges are smooth and the paint to primer transitions smoothly.

2. Pour the filling soil on the scraper, and use the scraper to evenly apply the filling soil on the scratched surface. After filling, the soil should be slightly higher than the paint surface. After patching, wait for the patching soil to dry completely.

3. After the filling soil is dry, use sandpaper and some water to polish the filling soil. Polish until the soil surface is parallel to the paint surface, and there are no edges or corners when touched by hand, and it can be smooth. After cleaning and drying, you can proceed to the next step.

4. Before spray painting, first cover the important parts around the scratches. After covering them, you can start spray painting. If it is a plastic part, it is recommended to spray primer first to increase the adhesion of the self-spray paint on the plastic part.

5. When spraying colored paint, pay attention to the spraying technique. Wait 3 to 5 minutes after each layer of spraying before spraying the next layer. Repeat spraying several times until the scratches and filler soil are completely covered and there is no difference in color from the surrounding paint.

6. Wait 20 minutes for the paint to dry, then use scratch repair agent to polish the paint. After sanding is complete, prepare for the next step. Spray 2 to 3 coats of gold polish at the junction of the new paint and the original paint to make the transition between the new paint and the original paint more natural.

7. Finally, spray varnish to make the paint surface look brighter. The varnish needs to be sprayed in several layers, leaving half a minute between each layer. After spraying, the entire painting process is completed.