Henri Matisse did decoupage. Those are definitely art.
It would be the ones collected in Jazz, 1947.
Mariarita Macchiavelli has written: 'Decoupage' -- subject(s): Decoupage
Yes you can apply decoupage glue over photographs.
decoupage
Craft Corner Deathmatch - 2005 The Decoupage Dogfight was released on: USA: April 2005
Yes, just be careful what type of glue you are using because it might make the decoupage paper bubble or tear from the wetness.
DECOUPAGE
About 1945.
decoupage
Decoupage 2000 Return of the Goddess - 1999 was released on: USA: 24 August 1999 (American Cinemateque)
You can remove decoupage with wallpaper remover, and a plastic scraper. Spray the wallpaper remover onto the decoupaged area and let it set for the recommended amount of time specified in the instructions. Use a plastic scraper to remove the decoupage. You can lightly sand the area to remove any excess.