What are liners - It is the inner fake wall that you cut from cardboard or a thin foam core (I use foam core) which is about 3/16" thick. This is then covered with some fabric (or not since it is all black or white) and on these liners you attach your exhibition information. At the San Diego fair, I have seen people setup their case with no liners and it looks rather bare being just a plain white background.
After I cut the foam core board to size, I got a nice table cloth in a pale cream with a large linen like texture and cut it to the size of the 4 pieces - back, bottom, left and right walls. With the table cloth cut, I covered the fronts of the liner sections and taped all the edges on the back.
Once this was all done, I can "set up the case" using stacks of books to support the liners from the outside and I can start pinning the text and picture panels from last year on the new case liners.
Because the case is smaller, everything will be closer together and I may leave a few items out. The nice thing is that this show does not have awards, all the show cases are for visitor information only, thus if it looks cramped I really don't have to worry about it. And considering I have everything printed and know what it should look like, it, setting it up now, is just making sure it looks OK, then it will be ready for the actual show at the end of the month.
Here is the case setup. I yet to have to make 2 risers for the items at the back. Below this picture is a picture from last year's San Diego fair.