5 Techniques To Lift, Remove & Erase Dry Watercolor Paint
Sponges again, Bob
Use only natural sea sponges or cellulose (o’cello style) sponges in natural or neutral colors. They are stronger and hold more water than lightweight foam sponges.
Simplest to use, use a clean damp sponge with a gentle wiping motion. Lift color from the paper, rotate to clean area on the sponge, wipe again. Repeat as needed.
Here I carefully rub a large swath of color off the bottom middle section of the painting.
New sponge? Rinse out new sponges thoroughly using clean water. Most are lightly sized to hold their shape before sale. Make sure your tools are clean.