Undo all the screws and take the wind reflector off at the top.
open the roof half way and pull the interior cloth off with the back metal board behind it. it has 5 clips along the front egde. Now this should slide upwards and out (go easy on the paintowork, better to mask it up)
you might have to open/close the roof to get this out i think.
after that the sunroof should be easier to unbolt and figure out yourself as i didnt go that far in removing it.
Careful with the paintwork

Hope that gives you some idea
Blue