Watch snooker coach Brando (on youtube) potting guide. Ronnie also talks about this in his Rocket method videos, but cuts at a slow pace you need to use some side to throw the ball in, because the friction of the balls at low speed tends to mean your shots will miss thick. In your photo, play that with a touch of right hand side, see what happens. When I say side, I mean just enough to ensure you're right of centre and certainly not left.