fiamma awning fabric repair

[Unstable_Tripod]

Has anyone done the same DUMB thing I did: tear the fabric of the awning on the top corner of the door?

I have a triangular tear about 10" on a side. I never even noticed it when I did it. I discovered it on a subsequent trip when I opened the awning. I put some duct tape on it (from the underside -- I can't reach the top side) for a stopgap measure but now I need to do something permanent.

I called Camping World and they said that replacing the fabric would be $400. That's a no-go!

Suggestions or ideas would be most welcome.

Thanks!