It is completely possible to buy a pattern to make a corset for yourself, but if you have non-standard measurements, there is a decent chance that the pattern will require a high amount of alteration anyway. So why not just make a completely custom pattern, fitted exactly to you, with duct tape? I did and it has been awesome!
How to make a corset: DIY corset pattern, fitted exactly to you
How to Sew a Bustier Dress - With a Pattern or Custom Draft
How To Draft A Corset Pattern (PDFDrive)
Jozzan Vengeancee Goth beauty, Goth girls, Punk girl
How to make a corset: DIY corset pattern, fitted exactly to you
Underbust pattern tutorial
The Parker Corset - Free Sewing Pattern
Sewing Your First Corset - Spoonflower Blog
How To Refashion a Dress to a Corset Back - Amy Nicole Studio
Katrina Crane red and black Renaissance style corset gown with jeweled belt
How to make a corset: DIY corset pattern, fitted exactly to you
How to Style and Shop: Corsets, Corset Tops, Corset Dresses
How to make a Duct Tape dress form • Offbeat Wed (was Offbeat Bride)