Hi! You will only be matched by fandom, ship, and type of fanwork you are offering (art, fic, or both). You won't be matched by specific details because it is not hand matched and the algorithm will only take those into consideration. Just offer the pairings and fandoms that you are willing to write and/or make art of. Once you are matched, you can see what your recip likes/doesn't like. In fact, you can see what people are asking for already: https://archiveofourown.org/collections/RareFemslashExchange2021/requests

Even if they like something that you are not comfortable with, they are not allowed to box you into writing just one type of story so you should have other options.

Hope that helps!