How do I properly use my... Erm... Super? I bust it out and hit somebody...then I just spam the buttons?
I'm not a Pro Tier player or anything but here's what I've noticed:
You have two options against a Rush:
1. Block the whole thing
2. Evade repeatedly around the attack
So, what I've noticed is this, if you're in the air, you can't do #1. What this means is the best time to pop a Super is when you're opponent is jumping, because they can't block in the Air.
That also means the reverse is true: When your opponent has Super meter, you should stop jumping. Wait until they use their meter, but give yourself options by staying on the ground so you can block if they use their Super.
... So yeah, that's my Amateur Tip. Other than that you can Super through someone's attack so wait until they attack you or they have both Arms out so they can't block.