Unfortunately the smooth plate is also basically a sticker, you can tell by the tab area where the nozzle is cleaned. You would need to remove that first I believe, not sure how one would do that or if one would want to though.
Also, the kit with 4 stickers and one plate will serve fine for two stickers, one on each side of the included blank. You could probably find out how to blank one of those smooth plates for the other two stickers.