Howdy! Welcome to DeviantArt! This is definitely the best place to be if you're here to post and share art/literature!
A couple tips for you to help you get started-
Click that +watch button on the top right of each Deviant's page to follow them and get updated when they post new works. You can also fave works you really enjoy, and that button is on the top right of each deviation page.
To get your work out there, I recommend joining groups! Groups are miniature clusters of people here with a common interest! For you, I'd recommend finding some Fire Emblem groups or Literature groups (just go to the more tab up top, you'll find groups there!)
Again, best of luck to you and I hope you enjoy your time here!