The inner roof liner is held in place similar to the rear seat side trim and will just pull apart
You will then see that the main roof itself is made up of 3 parts and is held together by screws if you remove the screws the sides will come apart
By doing so you will destroy the rear door window seal which is bonded in place
This seal is over £120 from Landrover
One you get it apart it will not just fit inside
my suggestion would be to have the rag top repaired