Here's the 2 common mistakes candidates make:
1. They doubt themselves:
Every candidate we've ever supported from executives making millions in annual income to new graduates has self doubt.
The key differentiator between the better and worse interviewers is the better interviewers don't bring their self doubt to interviews.
Your self doubt will show up in your body language, tone, eye contact, and speaking cadence.
Solution:
Speak more slowly during interviews.
Speaking slowly calms you down (relieving your self doubt) and signals that you don't have anything to prove to the interviewer.
2. They under-prepare:
The highest performing sales people write sales scripts prior to sales calls and then practice them.
Solution:
Read this long-form document on how to prepare for all your interviews and pay attention to how we curate honest but compelling answers to questions like "What is your target salary": https://docs.google.com/document/d/1hY78vpl9V7JE5HLmG_sk5rtbd3KgO8_6y5KKXtwVqso/edit
My advice is to read our advice, then re-write your own approach to interviewing in your own words.