You can just do two thinner 3x3 pieces of wood and then paint them, and then lie them right on top. No need to latch,I don't think. That is good because you also have two X wing boards.
Here is mine, which is that style:
http://2.bp.blogspot.com/-EJeeoBRH9S4/VZUp3TE06LI/AAAAAAAAIPQ/3q1HTKZ6k2c/s1600/DSC_0039.JPG
Edited by Lord Ashram