Possible Clues:

• Wall coatings
• One lays it on thick with flowers at last
• Smears -- they're often seen on children's knees
• Bygone bandages
• Bandages, to Brits
• Places a smooth surface on a wall
• Covers place with flowers
• Overspreads
• Daubs a number of stickers round
• Covers a wall - with protection for cuts?