Movable Mural?

[tigralon.livejournal.com]

I am going to make a mural for my office wall, but I want to make it removable since obviously I will (hopefully) not be in the same office for the rest of my life.   :P  It will probably be about 100" tall and 100" wide (very rough guess).

Has anybody made a movable/removable mural before?  Right now my plan is to buy a ton of canvas at Jo-Ann, sew it together to make a piece large enough, paint the mural onto it, and then sew a pocket along the top for a rod so I can just hang the rod from two screws.  But I would love to hear from others who have actually done something like this...or just who have any great ideas or thoughts on what to do or to avoid.  With a project this big, a little planning ahead goes a long way!!