>>6776159I used this to make the surface. It said that it dries quickly and doesn't need any treatment but it just stayed runny for hours, not as easy to work with as I had hoped.
For this one I just made the base out of modelling clay, painted it, put a layer of gel and then tried to mess up the surface a bit. Also tried adding a thin layer of paint on the surface to neutralize some of the strong blue color.