This is easy on your part since you already know their gender, age, location and common interests. Is there a way you can say it more clearly?
A sign that you left them wanting for more of your wisdom is right after your inspirational speech or the entire event, they would come up to you, ask you a lot of questions, and ask for any way to contact you.
Give a copy of your speech to someone who can give you valuable feedback. That makes sense, as long as you accept that continual revision and practice is your responsibility as a speaker. References 2.
The final draft should look more like a poem than a page from a book. Watch great speech makers on the internet and learn from them.