I can go weeks before I see a screen set away from the ball but it is a great way to get both offensive players open.
Make an emphatic screen so you are a real obstacle for the defense. Make a noisy screen with your feet so the cutter does not leave too early. Make contact with the defender, your belt buckle to defenders hip or back pocket. Raise a fist so your teammate knows a screen is coming. After screening, the screener is usually wide open.