Playing off the cushion

It has been a week part of my game for a long time now. Can't figure it out at all. When ever I play from the cushion, especially using a bridge where my index finger loops over the cue I hit the shot with unintentional side. Depending on the distance it isn't enough to miss the pot but they never go in clean. I get apprehensive and can sense my break coming to an end when I have to play off the cushion. This apprehension doesn't help either.

Any advice?

Playing off the cushion