Wear a hat when out in the sunlight. Eat carefully of good food. Exercise, drink enough fluids, and get adequate sleep. Pressing your face against a pillow adds more wrinkles. Avoid alcohol and nicotine.
Smoking also decreases blood supply to the face and skin.
Dampen the skin and then apply a little vegetable oil, to lubricate it. That will help put water and oil into your skin cells. Massage your face as the Orientals do. That tends to exercise the skin and facial muscles and strengthen them. Leave it there until it dries, and then wipe it off with water.