Neiljoust
Do you have a shed in your back garden? If you do you can do what I did and get hold of a few windows I got a few out of skips!
Now what I did was to fix these windows onto the back of my shed to practise on at the weekends this helped no end, I spent hours on these windows to get my technique right!
I still have these windows today and I have 2 double glazed windows and one wooden window the reason I have kept them was when I started to wfp I still had these windows to practise on and still do as many people have different techniques that they use as you will see on the forum I`ll try all these different techniques because with wfp some windows require different techniques to be used on them!
Futhermore if you intend to do upvc cleaning of consevatories it is good to try out different products on these upvc practise windows to find a product that you will be happy with,