First of all, i hope this isn't a too general question, but it's something that i always have a bit of trouble with.
How do you describe the effects (or rather gimmicks) in your interaction design. With effects/gimmicks i mean stuff like, "When i hover my mouse over the button, it will glow, and when it's clicked it will shoot stars and rainbows from the back".
Or here are some visual examples ripped from Dribbble:
How would a description of the above examples look like in your design documents? And in which phase do you decide which animations you will use and how they will look like or affect your User Experience.
I usually utilize the JJG planes, so i would imagine that this would fall under "Surface Plane".