Your mushroom decor is the same as the pink and blue one. It's just how the different enamels used to provide the colours behave.
Think more about oil floating on water. The enamels on the surface of your mushoom have behaved like that when heated - they do not want to mix so they pull away from each other,
Your raised yellow bits are like the oil, pulling itself together to get away from the bits it doesn't like.
The darker underlayer is more liquidy than the starting-to-melt yellow powders applied, they each have different temperatures at which they start running.
Topic: Did Mdina every use acid etching? (Read 1140 times)
