I started a painting maybe 4 weeks ago, covered the canvas with paint (oils plus linseed oil), wasn't sure how to proceed, set it aside and last night I painted over the painting (basic outline for painting). I had some 'bumps' on the original and a few of them, maybe 3-5, are now blistered and filled with wet paint. They are very small.
I don't plan on making my masterpiece on this, but I don't want the whole thing to fall off in 6 months if I continue to paint on it. Last night it was slightly moist to the touch.
So my question(s) is/are:
Can you paint over a painting?
How soon after the original painting can you paint over it?
Should I just can the whole project?
Thank you all.