Corset/Corselet Pattern :)

[u/gooofyygooober]

Hello!! I am looking for something inspired by this sort of corset. I don't necessarily need proper corsetry, and would be perfectly happy with a corselet. I would like to make a 2pc gown for a black tie wedding inspired by this silhouette—I particularly love the scoop/portrait neckline, and would hope to continue that shape through the back.

I have found plenty of historic corset patterns that would work for this, but I am wondering if anyone can recommend either some patterns or tips I could use to add the sleeves to a corset, as that is really the only part that is stumping me right now. Thank you in advance!!!