Q&A for How to Execute the Major Kicks in Taekwondo

No, the back of your feet can also deliver fast damage. Heels will generate more damage, though.

You have to use your hips to "control" your legs. Adjust your position if you need to, and put weight on your standing foot.

Exercise your legs regularly, squats are perfect. The human body is not designed for our legs to extend that high, so strength is necessary to fight gravity and retain enough momentum to harm your opponent. Stretches are important, of course, to avoid injury.

Avoid the fight. This is most basic strategy of fighting. If you can't, try to make your opponent angry. They will give you more powerful attacks, but it will travel long distance and you can easily counter the punch and KO your opponent by delivering one hard shot on a pressure point.

Most likely not, seeing as you're in Korea, where the sport originated, I'm sure they would use the original colors. I'm pretty sure they would have American-system taught dojos, though.

Turn your head before actually kicking - it will help you spot before your execution of the kicks.

Practice doing a back kick, and soon you won't have to think much about doing one, like in sparring. Start slowly, then build up your speed and endurance.

Yes, but ask your instructor about how to prepare to come back. Make sure to warm up and take it easy, you've had a long break.