Free Mini Coaching Packages

Hi – I’m signed up for coach certification in March and wanted to get started getting practice coaching. I’ve done specific business coaching for a small niche personal chefs for about 2 years but not formal life coaching.
I’ve decided to do 10 clients / 6 sessions, 45 mins each for free.

My question is – how to I set up the call if people don’t know what life coaching is and explain it in a very simple way?
What is a simple way to run the call? I’m asking how can I help you today and then getting to a thought / feeling something that bothers them that I can use the model. Teach it to them briefly and continue. Is there anything I should improve?
I have 4 people already agreed to the free coaching. Is this a good way to get practice?