Thanks to all for the instructions and practical tips. After the local windscreen fitter let me down for a secnd time I decided to go ahead and fit it together with my friend. Attached are a few photos we took, I meant to take a few more but concentration was high and we forgot!
We pretty much followed the instructions given although few things we did which might be useful i.e.
1. We used gel superglue to attach and hold the trims in place
2. We test fitted the screen several times to be sure...to be sure
3. We used a strap to hold everything in place whilst the sealant cured.
Here's the photos
Thanks again