Add a small amount of mild dish soap to a damp towel. Thoroughly clean the wicker item of any dust, dirt or grim that might prevent a solid application of paint. When you are finished, rinse the while wicker piece under lukewarm water.
Brush on liquid paint stripper over the entire wicker piece with a stiff bristles artist paint brush and toothbrush. Work the stripping agent into all the corners and crevices of the wicker piece to remove all the old paint.
Wipe away the paint as it liquefies over time with your old towel. This may take anywhere from 10 to 20 minutes depending on the old paint. For stubborn paint, use a toothbrush to rub off the old paint as it liquefies from the stripping agent. Keep adding water to the towel and toothbrush as you wipe the paint off the wicker.
Let the wicker dry for a minimum of two days before you begin applying new paint coats and finishes. Keep the wicker in a dry, warm space to ensure it is completely ready for a new paint application.
Move the wicker to the garage or a workspace. Place a large tarp, old sheet or newspapers under and around the wicker item to prevent paint from damaging anything nearby.
Apply a coat of a paint and primer mixture onto the full surface of the wicker. Use slow, consistent, horizontal motions, while keeping the spray can one foot from the surface. Start your spray at the top of the item, then move down to the bottom. After a couple of days drying, add additional coats if necessary to cover the wicker well and saturate the surface.