Some techniques require wet paper, but for hard, crisp edges, you need drier paper and a drier brush. Of course, a dry brush in watercolor painting is a relative term because it's watercolor and everything is wet. But having your sponge absorb most of the water from your brush before you dip it into paint lets you execute those very controlled, every-hair-on-the-dog type paintings for the control freak in you. To stay in control of your detail, stay dry.
To dry your brush, touch the base or heel of the hairs on the damp sponge beside your water container. This absorbs excess water from the brush but leaves pigment in the tip of the hairs to paint with. Choose a small brush when you want lots of detail and control.
If you want a hard edge, you must be patient. If one area of your paper is wet and you touch it with another wet, the wets will run into each other. Goodbye hard edge. Have patience, or use a blow-dryer to dry your painting so you can keep working.
ëAnd, speaking of dry, to test the paper to see if it's dry yet, use the back of your hand to gently touch the surface of the paper. If it's cool to the skin, the paper is still wet. Notice that I said the back of your hand. If you use the palm of your hand, the paper may feel dry before it really is dry. The palm of your hand has been used so much — burned, blistered, lotioned, and so on — that it's no longer as sensitive as the back of your hand.
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