Say three things:
1. Hello,
2. Callsign,
3. Flightlevel (Maintaining or passing).
Don't say:
1. Aircraft type - We know that.
2. POB - We don't care.
3. Dep or Dest - We know that and/or we don't care.
3. The colour of your underwear - We REALLY don't care.
4. The word "confirm" after a readback - If you're unsure then "Say again".
Use your entire callsign at all times.
Acknowledge frequency changes.
Do not say confirm, ever.
Despite all the comments your enthusiasm is appreciated.
Happy flying.