Modification Making Horn Additions

Usually, horns are either small and sculpted onto the face portion of the head or they are magnetic. In Claude's case it is a little bit of both. Souldoll Aehael had a centaur/unicorn release with a similar horn hole in her forehead and then a magnetic horn that was placed inside. Most horns are created either by 3D Sculpting and printing or by using a form of clay/sculpy/expoxy. Sometimes they are cast in resin after being created and other times they are left in their original form. Without knowing exactly what you are looking for its a bit harder to give advice, so if you had a drawing or a picture of exactly what you are looking for (as you said Claude is close) it would be easier to suggest project journals or tips.

 

I'm a bit late to the party but have you looked on Etsy? There are some fantastic horns there for bjds that might suit your needs that you could then attach with a magnet, or failing that attach using apoxy sculpt if they need to go somewhere very specific. You could just sculpt with apoxy to begin with but it depends on your courage with making semi-permanent mods like that. Would love to see pictures if you have any updates, and as an owner of an Iplehouse Claude I can highly recommend him as he's fantastic.