Whilst a huge amount can be covered in a one-off session, these are best suited to Vocalists who have already built some momentum with their vocal development.
My Vocal Coaching packages are ideal for singers who want to make as much progress as possible. They are designed to help you to commit to your vocal training, by offering continuity and excellent value.
Record each session on your smart phone, and listen to the recording afterwards.
Make notes in a journal such as this one: https://www.amazon.co.uk/gp/product/1981681310/ref=ppx_yo_dt_b_asin_title_o09__o00_s00?ie=UTF8&psc=1
Always bring a bottle of water with you (and be well hydrated ahead of time.)
Know your lyrics. Reading takes up brain power that you will need for other things!
Be prepared to make mistakes and sound terrible at times. This is part of the process. I love mistakes.