unforeseeable results

alla prima – over another painting. why does this work more frequently than when painting on a blank canvas?? Maybe it’s more freeing, since you feel like the original, no matter how hard you worked on it, wasn’t working and so whatever you do will be better than ditching the canvas? It still needs a little work, but I like the rough and fresh quality of it, so hope not to ruin that. Wish me luck!