Cool!
And, honestly, I do tend to lean towards the costumey look ... ; -)

So, I revised my original sketch here.
Deciding to use a plaid fabric made me rethink the shape of the seams. All the sketches above have straight front seams that angle inward at the bottom. I like this look because I think it is flattering. BUT, plaids are much, much easier to match up if the seams curve in the same way, in the same place. So, I set out to make a very balanced and basic corset.
And start making samples ... to be continued.