When I am out at Flea Markets I always make sure to look for unique and beautiful watercolor landscapes. Usually I can find several and can compare the watercolor landscapes while I am there. When comparing watercolor landscapes I always look to see which one has the most vivid colors and images that make one stand out from the others. Place them all side by side and compare them all at once. This gives you a way to easily scan each piece and decide on the one that is right for you. It’s hard sometimes to compare the watercolor landscapes as each one, or rather each painter, usually  has different techniques that make each one of them unique and beautiful in their own right.