I guess to make this work right, you would need to decide how big the hollow space is?  If it is 1000 miles across it will be very difficult to show it.   

Does the character have to take up most of the cover?  It will be difficult to have this big person in front of a space that is supposed to be vast, especially with no sky and horzon to show vastness. 

If it is smaller you can llok at several of the old spherical space habitat ideas for the past. 
There wasa  Star Trek Next Generation epsiode about an undergound city that was in a pretty big space.

I can think of so many ways to show a hollow world both big and small.