What are the steps to achieve a professional-looking wall texture using a knockdown spray technique?

To achieve a professional-looking wall texture using a knockdown spray technique, follow these steps:

1. Prepare the wall surface by cleaning and repairing any imperfections.
2. Apply a base coat of texture using a spray gun or hopper.
3. Use a trowel to lightly "knock down" the texture while it is still wet.
4. Allow the texture to dry completely before painting or finishing.

By following these steps carefully, you can achieve a smooth and professional-looking wall texture using the knockdown spray technique.