Dumbbell Bench Press Tips:
Control the dumbbells throughout the set by lowering them slowly, not letting them touch your body at the bottom of the movement and not touching them together at the top of the movement.
Don't lock your elbows out or rest at the top of the movement.
Don't set the angle of the bench too high. This will recruit too much of the front shoulders.
When finished, place the dumbbells back on your thighs. Then safely place them on the floor.