This is also under Settings:Chats, and its a great way to introduce yourself to them.
This Guide to is pretty genius and worth a read.
You can find a guide to this or check out the episode of the OnlyFans Secrets Podcast where this is discussed.
Never use your personal Snapchat for your work on OnlyFans.
You can also get a ton of information on how to use OnlyFans features on the as well.
You should limit your posts to 1 hashtag max and preferably zero hashtags eventually.