Also a picture of my own, this is a nifty trick I had not really seen or not really thought of doing. I had done the week prior the Craft Circus in Ypsilanti and a few of the vendors did this. It came at the perfect time as I have been wanting/needing to add height to my table and displays. The idea is to use bed risers under your table, so a trip to Bed Bath and Beyond I got some for myself, I actually plan to get a second set.
Here is my table with the risers, this did leave my tablecloths not perfect they do cover but I had to pin to hide a gap. This show was also the reminder that there is a huge difference in an 8 foot table vs. a 6 foot table.