2nd client meeting

Today we had our 2nd meeting with the clients to talk about our initial ideas. After explaining to them my initial ideas, they seemed to prefer my 2nd idea which is the personal health adviser app.
They also pointed out some important features which I should consider adding in for better user experience.
1. Provide health tips other than just selling products
2. Give advice and reminders to users
3. Better shopping experience
4. As a customer, what would I want to get from this application?
5. Use posters and promotions to lead customers to ask the avatar

Although it was a long day of waiting and traffic jam, I had learned a lot from this meeting. But I am not satisfied with my performance today as I stuttered a lot and I don't think that I presented myself well enough as a designer to the clients.