Tone - select the right tone for your business brand. If your target market are young millennials, then the script would most likely include some slang words, be quite laid back and the script would be recorded in an energetic tone. If you primarily service the business market, then the script would be more articulate and recorded with a more professional tone.
The most engaging messages are slightly unique in nature. They combine a mix of clever scripting and music. Slight humour is often used to promote a product or service and is usually quite effective. It's also very important to choose both the written and spoken tone that appeals to the characteristics of your audience. If your target market is the younger generation, a script that includes slang words and is quite laid back would be an excellent choice. If your target market is primarily business professionals, then a more articulate choice of words would be more suitable.

Often, it’s a good idea to precede the message with a bright alert sound effect to grab snoozing customer attention:
Instead of writing to inform people or to entertain them, you need to write your script as a way to create a conversation. You need to imagine what someone would say to another person and then put it on the page. Don’t be afraid if it feels like you’re talking to yourself — that just means you’re writing well.