Will poster paint used with rubber stamp to create a border adhere to enamel painted wall?

Poster paint may not adhere well to an enamel-painted wall, as the smooth, glossy surface of enamel can prevent proper bonding. To improve adhesion, it's recommended to lightly sand the enamel surface or apply a primer before using the poster paint. However, for best results, consider using acrylic paint designed for use on enamel surfaces. Always test a small area first to ensure compatibility.