Hi [Name],
I’m a big fan of your work. I was particularly impressed by [project/campaign/award].
I’m reaching out because I spotted an opportunity for you with [area in their business that could be improved].
I’ve been helping businesses like yours for [x] years and I’d love to chat with you about how we could do the same for you!
Could you spare 10 minutes for a call sometime next week?
Thanks,
[Name]