I’ve used Aldridge trimmers to supply materials for DIY re trim of panels and factory rear  Hard top ( Fabric was top notch and period correct, pattern perfectly cut too) I completed task 10+ years ago  only jus now thinkg of  to  recolour . I’ve also since found a jaguar book  Cabriolet Hood Refurbishment  ( publication Part No JTP 248   has diagrames & full instructions on how to cover Targa panels , Roof T -bar & Rails &  factory Hard top. I can scan  and email should you need.

https://www.aldridge.co.uk/