Here's the venue email template you can use. I sent this to many venues when I first started to get my name out there. Also gave me the opportunity to get some photos for my portfolio.
To whom it may concern,
My name is Bex and I am a balloon decor stylist from chandlers Ford. I am emailing you because I would love the opportunity to style one of my displays at your venue, complimentary. It would give me a great opportunity to get some content for my portfolio.
If you’d like to know any more about my proposal then please feel free to contact me.
Here’s the link to my social media account if you would like to see the work I create: www.instagram.com/blow_it_with_bex Thank you so much for taking the time to reading my email and I look forward to hearing from you. Kind regards Bex phelps Blow it with Bex