About 1945.
Henri Matisse did decoupage. Those are definitely art.
decoupage
Henri Matisse's paintings are displayed in various prestigious institutions worldwide. Major collections can be found at the Museum of Modern Art (MoMA) in New York, the Centre Pompidou in Paris, and the Barnes Foundation in Philadelphia. Additionally, many of his works are featured in temporary exhibitions at art museums and galleries globally. For a comprehensive experience, visiting these venues or their websites can provide access to his masterpieces.
decoupage
Decoupage is the art of glueing paper cutouts onto other objects Yes you can polcrylic seal over the paper cutouts
To create a unique and creative piece of art using magazine decoupage, start by selecting a variety of magazines with interesting images and colors. Cut out different shapes and patterns from the magazines and arrange them on a canvas or other surface in a visually appealing way. Experiment with layering and overlapping the cutouts to create depth and texture. Use a decoupage glue to adhere the cutouts to the surface, and finish with a protective sealant for a polished look. Experiment with different techniques and combinations to make your artwork stand out.
This art/craft can be called "collage" or "decoupage".
Art was his only occupation.
Naive Art.
impressionism
impressionism