Hi and welcome! Glad you're finally taking the first step in your partner search!
An F-List isn't needed. It's just an easy way to give people a list of things you're into exploring. There are quite a few RTs that only list the top 5-6 kinks they want.
I'm relatively new here, but here's my thoughts from when I was making my RT.
Your RT should be about you. People who read it should come away with a better idea of your personality, what you're into, and how you write. 'How you write' is crucial, especially if you want to only play through PMs or Discord or somewhere else where other people here can't read what you've written before. Some people include samples of their writing in a separate section from their plot ideas. I chose to turn my plot ideas into my writing samples. If you have plot ideas that are longer than like 2-3 paragraphs, I think it's a good idea to put them in spoiler tags so people can skip what they're not interested in without having to scroll too much.
Like Solo pointed out, it's a really good idea to put any OOC expectations you have near the top of your RT. If it's not the first thing people see, it should definitely be the second.