Wisteria pruning

[GettingUntrapped]

Hello everyone, I'm working as a gardener and have been asked to give a summer prune to wisteria which is rampant and also high up, approx 10-12 feet off the ground.
Pictures hopefully attached.
1st pic from upstairs window, and 2nd one from ground.
I'm a bit scared of heights but wonder if I should try to overcome that and crack on with the job.
It also involves getting up on a glass roof and putting some pins in the wall of the house to train the wisteria across the glass roof so the flowers can be seen from inside the house when you look up.
Beautiful; but would you be comfortable doing it? Not scared of hard work, just the height. Any tips?

Pics appear to be other way around, the one with the window is upstairs.

No advice, but I hope you’re insured!

Not sure I’d be climbing on a glass roof! Can you use an access scaffold instead?

I wouldn't climb on a glass roof. It needs a scaffold tower.

Owners need to he made aware it will need pruning twice a year over the glass roof which will require scaffold each time.