Idea! Digipacks

I had an idea to design, on the front panel, the material to be raised in a droplet-fashion, so that when felt, it was like droplets of the front cover. This would relate the digipack back to the name of Cara May Smith's début album, "Water On Glass". However, this modification would be much easier applied on plastic, and I'm not sure if it can be applied to reinforced cardboard. I'll have to ask Sir.