http://www.foundationsrevealed.com/index-of-articles/corsetry/fabricsmaterials/303-leather-corset-making
This is an in depth breakdown of how making corsets in leather can pose different problems than traditional mediums. Also, do take the time to draft your own patterns. Paying 6-8$ for a pattern will yield a pattern designed for the "standard" body and numbers which will guarantee some form of pain. If your making all the effort to make a corset then why not? (Info available on the website the link will take you to) if you were ever in awe of how those "ecperienced" tight lacers got so tiny they did NOT suffer through the pain of an ill fitting corset. I made my own fitted just to me and was able to get a reduction of 6 inches right away and my numbers are 36 inch bust 26 inch waist and 40 inch at the hips BEFORE lacing. Regular corsets don't reduce my waist at all because I already shaped that way. If you do it yourself there will be no pain and you'll be very proud of it. Even if you make mistakes the shape of the corset will be noticeably unique and people will see right off the bat that it isn't a store bought throw away.