When putting varnish on a finished painting, should you use a canned spray or one that you have?

I imagine this would depend a lot on the medium you're using; I've always used the spray-on type for pastels and charcoal and have never had any problems. I'd imagine that oil paints would be fine with a brush-on, but something like watercolors might have some issues.

Take clean white cotton cloth (a bandage cloth better).

Wrap the bandage cloth on to your fore finger so as to make a small ball firmly griped.

Now slowly apply varnish on your paint like you are touching a baby's face.

Do not rub or use or forward & backward movements.

That's it. ( how I do. ) See my paintings in my Hub.

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