Blending with oils

Some of my students have difficulty with blending. here's a tip. For a smooth transition between two colors, both should be wet. Using a large (size 8 is good) bristle brush that is clean and dry, place 1/2 the brush on one color and 1/2 on the other and slowly stroke back and forth to get a smooth transition. You can blend into a dry color as well this way, but using this technique with wet into wet should provide the most satisfactory blend. If this is not clear enough, visit Bill Martin's explanation, which has pictures.