When using the 'wet-on-wet' painting technique can I use the pre-stretched

[P.L.]

canvas available in most art shops? These are usually already coated with at least 2 layers of gesso. Can I start immediately by then coating this with liquid white as used by Bob Ross and other wet-on-wet painters? Sometimes Bob Ross has coated his canvas with an acrylic paint. Can anyone explain why he sometimes coats with one thing and on others with something else?

Using this technique, must the painting be finished in one session or could it be left part way through until the next day? Thanks.

 

[Jay]

If you are using acrylic paint you can't leave it over night because it will be dry by the next day.The only way that can be done is by using oils in stead of acrylics. And yes you can use pre-stretched canvas.