Having been tucked away for a while some appear relatively fresh when floundering on the floor. Every plein air effort gets the benefit of a variety of solutions with the juror's studio eye. Elements are mentally taken out and put in. Skies are repainted. Things are punched in, toned down, brightened up.
Complexity is added, reduced.
Glazes and scumbles are planned. Works are moved, juxtaposed one to the other, some on the secondary easel, some forever floored. The only tools so far called into play are a match and a good cigar. I don't believe in it for the art profession. The main job is to learn to be your own best critic.