I don't know if I have any pictures, I'll have to check. However I will describe as best I can. We had those snaps in ours also. When redoing the bath, I drilled out the snaps and filled in the holes. Now the bathroom is refinished with no snaps and I really don't want to ad them back. We have started using our Caravel
now, and I am still trying things out and making minor adjustments as we use the camper more. There is a track that runs in the wood channel between the closets. Originally this was for a folding partition that was missing in our camper. My wife made a nice looking curtain panel in this location that hangs from this track. We have attached to the back of this nice looking panel, on the same rings, a curtain liner with plenty of length to expand out into the shower and enough width to cover the closets. For now this works for us, but it is not optimal. The curtain liner (an off the self standard one) really needs to be on a separate rod that hangs further back in the shower area about where the snaps were. I have seen someone use a bendable curtain track attached to the ceiling that looks like it might work well. I have also thought about this curtain rod
that they sell at Camping World. This would have to be attached to the closets somehow.
Sorry, for the rambling thoughts, but I am trying to figure out what to do myself
If you want to use the snaps as is, you will need to buy a standard shower liner and a snap kit. Simply add snaps in the correct locations to the top of your shower liner. VTS sells snaps already attached to a cloth strip. You could use this and sew the strip to the liner as another option.