What are the etiquette standards for the first 30 seconds of a senior-banker meeting?

1. Stand up and face the banker.
2. Make eye contact.
3. Shake hands firmly.
4. Introduce yourself clearly.
5. Let the banker respond.
6. Use brief natural small talk if invited.
7. Sit when invited.
8. Wait for the first question rather than launching immediately.

calm, alert, respectful, and not overly rehearsed.

talking too fast, staying seated, checking phone, overdoing small talk, or forcing your prepared pitch before the banker has opened the interview.

You can handle senior client situations without awkwardness.