One of the biggest things is passion. If you are passionate and excited about your company and your product that excitement will transfer to your listener. If you present it like “oh yeah, it’s just this little thing we’ve been doing ya know? We make these widgets and sell them” then their response will be, “oh nice that’s kinda cool”. But if you are like “oh man I had been having this issue for awhile so we came up with these widgets - I’ve been developing it night and day, I mean, it doesn’t even feel like work because these widgets are going to fix everything for so many people...” then the person is going to be like “wow! These widgets are going to be amazing, hey Bob, let me tell you about these widgets I just heard about!”
The other I would suggest is to sit down with your story and figure out what is important and what isn’t. When you go to the doctor, they ask you what’s hurting. If you just say “my knee” then that really doesn’t give them enough info. But if you say “well it was Easter morning and I had just left for my aunts house but I forgot my keys so I went back inside but then I let my cat out so I was running around the house and he went under the car so I went towards the car and I slipped on some ice and I landed kind of awkwardly here on the left side of my knee towards the bottom here” then that is wayyy to much info and he’s going to be frustrated by the time you get to the goddamn point. So sit down with your story and get it down to a manageable level “I slipped on some ice and I landed kind of awkwardly here on the left side of my knee”. You may even leave in “I was chasing my cat” at the beginning because it short and kind of interesting but leave out the nonsense if it doesn’t add to the story.