No videos that I could find but I can talk you through it now.
Tools required -
Drill and bit suitable size for the rivets
Pop rivet gun (manual type)
Strong scissors/cutters
Headtorch
smallish hands
Technical bit -
So, begin in the boot and put the roof into easy access mode using the two handles.
Using your headtorch, locate the body pins - these are midway long the bottom of the fabric and have a clip which you have to carefully remove. Looks like this and slides off one way,
Other relevant part numbers (where applicable).
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Make sure you have a good hold of it so as not to drop it! This is the smallish hands bit. Do both sides.
Now the fabric and broken plastic/metal bits should pull free of the pin. Even if it does not look broken you should still attach the new parts to both sides as it will fail eventually.
Standing at the side of the car, put your hand down inside the channel and pull the fabric up and out and fold it up so you are looking at the inside of the fabric. You'll see if it is broken. You need to cut out the broken part around the hole and take out about one centimeter of the plastic/metal with your cutters.
Place the new part over the old and mark the holes as you are going to drill though the existing plastic and fabric.
Note when drilling put a block behind the old part, you do not want to stick the drill through the hood fabric behind it!
So, with the riveter ready, hold the new against the old, this time the new will be held to the inside of the hood while you push the rivet through the holes from the exterior aspect of the hood (you do it this way so that the new part will push the hood more towards the rubber seal and also so that the rivet's flat head is on the outer aspect and the fat part of the rivet will be inward facing to avoid snagging.
Do all rivets and go back to the boot and slide the fabric onto the body pin, slide on the clip and you are done. Repeat on the other side.
It looks more complicated that it actually is.