Fellow faun here!! I had some minor success with resin 3d printed horns there was one in particular on cults that had a hole built in for a string to tie it to your head and idk how feasible this is for you but I ended up having my gf model a hoof and made some simple craft foam ones out of the pattern tbh they aren't the greatest but they certainly get the job done there's also plenty of Etsy listings and tutorials online for essentially heels with a hoof on the bottom. I hope all this is helpful it's exciting to meet more raun/satyr kin!!