Musing is looking for new creators and you can apply to be one in their discord server, which can be found here: https://discord.gg/puVEC76.
Before applying, I would recommend that you spend time on musing both answering and asking questions, you should know how musing works. The leader picks the curators and you just have to be a good fit. Having experience is the best way to do that.
Taken from the guide on what to say when you apply:
As a reminder, simply list the following
~ Steemit username
~ Country you are from
~ Why you're a good fit