I have kicked this around in my head for some time before just trying it.  This building was perfect for trying this out on. I have read many articles on how to put signs on brick buildings and clapboard siding.  First find a picture you like and cut it out from a magazine or book and then sand the back of it so you can almost see through it.  I tried it; it takes a long time to sand paper down who knew paper was so hard to thin down.  When I got the chance to do it on this building, it came out great as you can see. Bar Mills gives you printed signs with the instruction for the buildings. Instead of using theirs, I scanned their photo of Pfefferkorn Furniture and then printed them out on plain paper. 
Tissue paper has a shiny side and a dull side. Cut out a piece of tissue paper a little bigger then your printed sign and tape the shiny down over the sign you just printed. Now reprint your sign again this time it will print out onto your tissue paper. I used an inject printer for my signs, you will have to set the ink from running when it gets wet from the glue.  I sprayed 2 or 3 light coats of Testers dull coat to set the ink in the paper so it will not smudge when it gets wet. Cut out your sign, be careful or it will tear on you.  To apply it to your building I used white glue and thinned it down with a very little water.  Use a small paintbrush and apply a little glue on your building where the sign is to be placed. Affix one corner of of the sign in place so you can square it up with the building. 
You only have one chance at this so be careful. Once you have it in place lift the rest of the sign up and apply glue. Now roll it down carefully from the set side and use your paintbrush to work out any air bubbles plus working it down into the clapboards or the brick. You can use a little glue on top to help set it, do not pick at it to much just let it dry.  The white glue should dry dull, if it’s shiny just give it little shot of dull coat.  For the Woodworking sign, I made it from my graphic program and found a font close to what Bar Mills used and printed it out the same way as I did above.  If you ever wanted to print out a flag this is a great way to do it because the tissue paper is so thin it can be seen from both sides.
Have fun printing out signs it’s not hard to do.