yip you just did lol
my experience with decals is thats its not ALWAYS a piece of cake, some can be very stubborn, but I've learned that the trick is to move the heat around the whole decal, always moving for a good 30-40 seconds (longer if its a BIG decal) just to loosen up the adhesive underneath, hitting all areas of the decal, not just your starting point. don't hit it so long that things wrinkle up, (because then it gets brittle and tears) then go back to your start point, get your fingernail under a good edge, and pull carefully, slowly, using multiple fingers so as not to tear the decal from edge to edge... if it goes right, the whole thing will come off in one big piece.
good luck