I've been on both sides of the table. Before you set pixels to powerpoint...
#1 - What questions do you have for the analyst to help validate or refute your assumptions about the market?
#2 - Can you describe the customer problem and your offering clearly enough that when a customer who fits your ideal target calls the analyst, the analyst thinks of you.
#3 - Do you have a unquie perspective or better yet data on customer behaviors that would help the analyst do their job more effectively?
#4 - Have you read the recent research of the key analysts you will be briefing?
#5 - How is your snizzle different / better / cheaper than what the analyst already knows well?
Some good posts on the topic:
https://go.forrester.com/blogs/selling-your-vision-what-i-look-for-in-a-briefing/
https://chenxiwang.wordpress.com/2014/03/27/be-a-good-marketer-and-win-over-your-analyst-in-8-slides/