Help with writing erotic,sex stories.

Hi everyone please help. Im asking for input, pointers,suggestions, guidance etc with writing fictional sex stories/sexy stories.

Ok so I have a story/ story series ideas. They evolve around:
Incest,

Fucking,

Love making,

Group,

Cheating,

Passionate sex/love making,

MILF,

Oral,

Hand job,

Anal,

Possible mild domination ,

Pregnant,

Swallowing,

Male/Female,

Male/female/female,

Male/female/female /Female

These are the flairs that I want to include in my sex series.
But; how does one write a sex story?
I’ve read many. Based off the list above;how does one write a good readable sex story series?
That would make people wanting more and also make people want to reread my said stories?
What are some important things I should write about,describe in my said sex stories/series?

Thanks for reading my post question.