I would get the squares signed first, and would suggest that you have a few spare siggy blocks, someone is sure to mess theirs up and a spare on hand will be a save. Use masking or painters tape to create a frame on the blocks, it will give a bit of stability as well as defining the space to be signed, so no signing in the seam allowances
Last edited by Baloonatic; 10-20-2012 at 03:56 AM.