So this is a song, with very easy chords. What we are working on, is keeping a good rhythm with your soft rock strum, and being able to speed it up. Take your time, to increase the speed of your strumming, slowly. If you try to play really fast early on, it could frustrate you. Also, remember, don’t strum from your elbow; you should be using the action in your wrist, fingers, and forearm, to create a fast strum.