I came up with one idea for my folded silver vessel.  I made 2 paper models then decided to try it in copper since I don't have gas to solder the pin back on my aluminum and silver brooch.
In the picture below I have the design glued to 12" x 24" 20 
ga. copper.  The design was sized to fit on a 12" x 12" sheet.  I use Elmer's School Glue to glue the paper to the metal.  Usually I sand the surface of the metal a little to help the glue adhere to it.  This time I decided to skip that step and see if it would still hold 
ok.  Skipping that step was a big mistake.  The glue does not adhere to the metal at all.  The paper was constantly peeling up while I was trying to saw out the shape and I kept having to glue it back down with super glue, which will be more difficult to remove when I am finished.

This is about where I stopped last night.  I have almost all the holes drilled and I am 
deburring them.

This piece should be different from the others I have made so far, I am trying something new.  Except for the holes.  I am getting a little tired of the holes.  The silver piece probably won't have holes, or if it does maybe they will be smaller and much closer together.
What ever design I decide to use for the silver vessel I will probably not cut it out of a single sheet of metal like I have done with every other folded vessel.  I will probably cut out each side individually then solder them all to a center piece.  There's  lot of waste when I cut the design out of a single sheet of metal.  That's 
ok with copper, brass and bronze, but silver is too expensive to waste.