Okies, here's my calculated measurements.

I'm pretty sure I just went ahead and rounded to the nearest whole inch for all of these, but these were the numbers I came up with when I did the math (8-digit multiplication factor FTW!) The only real difference I had between making this out of wood and making it out of fabric was I took 2 inches off the panel width and height measurements so I could make some beveled optical illusion pieces to make the blanket seem 3D.
As far as the stencils go, I made the "POLICE PUBLIC CALL BOX" by hand using word but I don't remember the font or the size I used. It was a lot of trial and error that way. Just remember to center it on the TARDIS by the "U" and "C" and not the "B" like I did, mine's a little off to the left because of that.
And the plaque, I have the PDF files but I don't know where to upload them right now. I'm pretty sure I got them from tardisbuilders.net (I don't think this is the right link, the favorite was on my old computer and I couldn't get it transferred before it died). One's in standard and one's in metric and I think the metric version was closest to the right size.
Hope this helps you out!