A glass call is one of the easiest calls to do a kee kee on. All you should have to do is pinch your striker tight, and put some downward pressure on it. Some calls kee kee very easy, some you have to bare down on, it depends on how your call is conditioned. Kee kee in the same spot you normally play on, using a Small Ark, make 3 quick short strokes across the call , just like your tracing the shape of the soundboard.
To do a kee kee run, use 2 short Straight strokes ( no ark ) and on your 3rd stroke snap the striker down toward the center of the call. Do Not pause when you change direction of your stroke, it all in one stroke, straight across and snap it down. A jenny tends to kee kee more, a jake tends to kee kee run, they tend to have a little more rasp in their voice. Hope that helps you out.
Let me know if your having problems?