Choose the Appropriate Time and Audience.
Use a Hook to Engage the Listener.
Keep It Concise.
Highlight Emotional Elements.
Don't Rush.
Poke Fun at Yourself and Nobody Else.
Vary Your Rate of Speech and Volume.
Ask Listeners to Imagine.
A mixture is a physical combination of two or more substance
Is there an attachment to this?
The tense is all mixed up, but it looks like present is used most often, so "emitted" should be changed to "emits" and "pulled" should be changed to "pulls." I can't see the entire paragraph so just make sure that's consistent.
You don't need a comma in "running towards us with the fire extinguisher."
"Your mother and me" should be "Your mother and I." For reference try taking our "your mother" - it sounds pretty silly to say "me thinks" unless you're in the 1600s, right? And it should be "think" instead of "thinks."
