1) Technique doesn't matter as much as teachers say. You only need to express your passion for dancing.
The rest come with time and experience.
2) Getting rejected for a dance is normal and shouldn't inconvenience anyone.
3) Relax and don't think. Focus on keeping a good tango-posture that will enable you
to follow the leader more effectively.
4) Enjoy. After all it's just a dance. It is supposed to make you happy.