Calling all crafters! Do any of you do lampshade making ?

[SausageRocket]

I want to change the shade on one of my lamps but am struggling to find the 'right' thing. I want a squarish one in dark purple silk.

This is the closest I can find but the shape is all wrong

Sorry, I meant to add that if you do do lampshades I'd like to talk to you with a view to perhaps commissioning a shade