All good suggestions. The main points I used to help myself years ago:
1. Relax.
2. Remember the controllers are human (yes its true!
).
3. Write down clearance & ATIS details (abbreviate if you like).
4. Plan and think about what youre going to say before pressing the button.
5. Say it to yourself first (you can benefit from anticipating what youre likely to be told before you even leave and can rehearse on the ground).
6. Speak clearly, audibly and slowly.
7. Ask for the message again if you dont hear or understand it. If the human controller has a problem with that, then theyre not doing their job.
8. Enjoy! Its part of the fun.
Kermie