Applying elf putty primer is a simple process that helps create a smooth and even surface for your paint job. The first step is to make sure your walls or surfaces are clean and dry, then you can begin applying the primer with a brush or roller. Start by applying a thin layer in the corners and along the edges of the wall. Once the edges are covered, you can move on to the larger surfaces, making sure to cover all areas that will be painted. Once you've covered the entire area, let the primer dry for at least two hours before applying the paint.