Thank you for the encouraging comments, much appreciated.
I saw the cans of spray paint that I used on the road surface for over 12 months before I used it as I used the same product different colour on my first track to cover a bank in a dirt look. It was rough when I put it on, like old scx track, but after a few wipes with the sanding block, it now feels like an interior wall painted with a roller. Just a slight texture to it.
The snow is a Heki product that simulates snow. It sure does look like sugar but sparkles when the light is on it right.
I will organise an overall shot soon, at 8ft x 4ft, its not very big but is more fun than the other larger tracks I have built.