- The easiest way is to use regular paining brush.
- By using a piece of fabric.
- And the third way is to use a special marker filled with primer.
According to Chris Cook, the third way is the best way, because we only have to run the marker over the surface in order to place the primer. When you work with a primer you lower the possibility of re-positioning the self-adhesive film. In other words, it becomes very hard to remove the primer once it has been applied over the surface.
The primer cannot replace the main application technique!