Thanks EAdams. I made it thinking you may like it.
It is slower than the other, but it adds more variety in the trees shape and the chance to use fog/clouds.
This is an interesting theme that could be further developed.
I just need to find the right balance between beauty of the result and resolution speed.
For example, I thought to add leaves, but it slows down too much the filter. The only chance would be to add them as a spot, not well defined. I must test it.
Or I could reduce the number of tree variations and add 1 animal or 1 person ( a ghost?

).