Materials I have used :
3 D outliners
How to Do
First Cut the thermocol sheet according to the pattern. Make a mixture of Chalkpowder, glue and water. There is no specific ratio just to a proper consistency. Once the mixture is ready spread it evenly on the thermocol sheet using a knife. Leave it to dry.
Once its dried using a sandpaper evenly smoothen the surface. Now the surface is ready. Once ready using the pattern trace it on to the surface and then paint.