I have this piece of art I really like. I got it about 15 years ago at a thrift store. I’m not sure what you call this style/medium. The only thing I’ve seen is “folkart”.
It is dingy and I want to clean it. Particularly the white fabric background.
I don’t remember exactly what I did but at some point I tried spot cleaning and this was the result:

construction:
base: 1/4" hardboard composite with canvas sort of fabric glued on
hardboard I don’t know if this term is regional or well known. It’s that brown sheet that is often used on the backside of cheap modern furniture, like a bookshelf. It’s smooth on one side and rough on the other.

Top and bottom edges are in a groove of wood molding strips; these are stapled on and can be removed
design is made up of little items glued on: beads, small rocks, cord, ceramic
doesn’t seem to be a top coat or anything
There’s not really any hidden areas to test.

the glue is quite robust, I have been surprised that hardly anything has fallen off.
Any ideas? Hardboard really can’t get wet.
I wish I had properly protected it years ago.
Your first tries on spot cleaning look to me like the canvas was painted in white. So I’d look for options to clean paintings and maybe retouch the spot you tried to clean with white paint.
I worked in custom picture framing shops for a decade, and we would bring things like this to art restorers we contracted with.


