Le Mat Flap Holster Pattern

[Bruno Rock]

Howdy folks, it's been a long time, I havea customer that owns a Le Mat Revolver Clone, he wants me to make a holster Civil War style (see the attachments) , since I don't have such replica and the customer it's very far from my location, I'm wondering if there's anybody willing to share a pattern, I consider also the option to purchase a pattern, if there's any avalaible. Thank you all in advice for attention e replies