hi Isabelle,
for groundwork I use a sand and cement mix, medium dryness, this retains the bumpy effect, I then paint it with shades of brown.
For tufts of grass I use a product made for model railways, I will send you the email link of Martin who sells it, it comes in green for winter and brown for summer, and in different lenths.
if you go into the Gallery and look at my figures you can see what it looks like, especially on Toad of Toad Hall and Friends ( the BFFS figure )
for snow I use a product called Pollifilla, it is like plaster and you repair internal Walls with it. as long as it is White itvworks well, it also has crushed marble in it to make it shine like snow.
for Ice sheets make it quite wet so it flows, I also think Andreas Miniatures make a product ice?
hope this helps Nicholas
