This guy used pots under his wire to secure different heights for his mold. The covered wire with plastic. I think I'll try that if I make a hypertufa Boulder to cover all the utility stuff in the front yard.
DIY Bird Bath Planter I used terracotta pots, painted them w/ wood stain & baked them in the sun. Drilled holes w/ masonry bit. Sealed water dish & stuck bird & rocks on w/ epoxy resin. glued pots together w/ contact cement planted s