Well let me give you pointers on to how to attract a larger crowd.
1) You should let people know what you like to roleplay (New or not you should have an idea of what you wish to do, be it original characters and world or perhaps based off of a series.
2) If you are going with original, do you wish to play a realistic world or fantasy, then is it modern, medieval, Victorian, what time period?
3) You should lift multiple kinks you enjoy along with sexual orientation and pairings (Such as Teacher // Student) along with listing which roll you wish to play.
4) These are just some pointers, but you can also look around and see how others set up their threads to get an Idea of how to attract more people.