How to Write a High Level Idea for Your Series

If you have a high level idea for the whole series that it's going to be about witches and a creepy house. Now, if you've given yourself four different title names, now you can go through each one and just kind of think what does it what resonates with that title? I like to keep all of my series concept ideas in Scrivener because I can quickly and easily go back to the information I need. Just make sure that your series is developed and have a place to go back to as your world building fleshes out.