Of course one would not paint over a Masterpiece, but many thrift store paintings are a good source of material. Simply clean the canvas gently with soap and water, let dry and apply Gesso to cover the existing painting. If texture is a problem sanding down or building up are options.
Yes. Many artist have done so. Though often some or all of the existing painting was removed first. These are called palimpsests
Impasto.
Yes, Usually Painters use canvases to paint on.
Like most artists she used brushes and oil paint, painting on canvases.
He laid his canvases on the studio floor, then poured or dripped paint onto them using hardened brushes, sticks, and even basting syringes as paint applicators.
Renoir used oil paint and usually painted on big canvases, however at one point in his life he ran out of paint, and unfortunatly he ran out of money too, so he had to stop using oil paint for a while.
Because used large canvases and splattered paint on them with big brushes.
Jackson pollock
I think you are looking for Jackson Pollock.
Impasto.
Mainly she used brushes to apply oil paint on canvases.
Yes, Usually Painters use canvases to paint on.
Like most artists she used brushes and oil paint, painting on canvases.
Most painters after 1450 have used oil paint. So did Degas.
He laid his canvases on the studio floor, then poured or dripped paint onto them using hardened brushes, sticks, and even basting syringes as paint applicators.
Renoir used oil paint and usually painted on big canvases, however at one point in his life he ran out of paint, and unfortunatly he ran out of money too, so he had to stop using oil paint for a while.
The short answer is yes. Acrylic paints can be applied to both canvases and walls, with either a natural or manufactured sponge to get many different finishes.
Because that was what he did, and then he went on dripping color all over the canvas.