No that's a good idea. Have you thought of making it a more pale yellow? It will show up a little better.

I can remember doing something similar myself a couple of times.

Ok, I made some more snowy trees and messed around with the lights and the sheet effects. Now I think I need to make some people, or something. The centre feels a bit empty. Those are just scribbles I've placed at the moment.

Yes, it is a nice shape isn't it, but my goodness, that's a very wiggly coastline!

How about making some of the lowland bays a bit smoother so there's a bit of contrast with the wiggly bits?

Other than that it looks really good.

Ok. I've had a rethink and gone for much larger scale.

This isn't finished. It's just set up ready for details and possibly snowy rooftops.

There are.

I made them to cover large areas in dense forest. They only work well if you carefully spot single tree symbols all around the edges.

Part of the forest in the example map is done that way.

There are also drawing tools that do symbols in area. I think they were incorporated into the symbol catalogs