Hi Slicepong, yes the feeling of covering the ball or coming more over the top of it is a good image to have in your mind when trying to work on this. Maurice also mentioned above having a quicker swing speed and body/hip rotation which can help you get the ahot to be smoother and prevent thr bat angle from changing and opening up.
Really try to gwt the feeling that you are trying to contact the ball with the leading edge of the bat to generate the spin and nice closed angle that you are looking for. You van even practice aiming onto the white part on thw top of the net to get the feeling of coming right over the ball just to feel exactly how closed your bat can be.
