Many thanks for the encouraging comments guys.
Yes, panels came out. I don't think it would be at all possible to get a good finish otherwise. The main panel surrounding the gear stick is v.easy to remove. The ashtray lid comes off easily too, you'll see tabs underneath. The whole ashtray has to come out to remove the air con panel. The top vents need to come out to remove the top panel, and that's a little trickier. Made more tricky in my case by the fact that one of the release tabs used to swivel the vent fully upwards (which creates a gap...just....to get a T20 inside) has snapped off. I think someone must have had a go previously and messed it up. In any event, I only have a T20 as part of a socket set and need to buy a T20 screwdriver to re-attempt the vent removal.
As for lining up the pattern, actually, it was pretty easy. The 3M tape is marked with a grid on the back which makes accurate cutting easy. As long as you offer up the piece to be wrapped nice and square, it's a synch.
Another angle here:
Been a busy weekend, what with the wrapping and the Rosen installation for the kids:-
Finally, yes indeed, with "pro wrappers" charging £500 I should indeed offer my novice services. More than happy to help anyone out with this should they wish. Once you've done it once, you'll realise it's not rocket science.
When I have the doors off to do the door trim wrapping, will also be upgrading the absolutely pants HK speaker system with some lovely JL kit.