Not sure if they would double for birch because the leaves are quite dark, but you could scale them differentially to make them slimmer.

Been working on everything I've done so far together today - to get things like relative contrast and shadows right. The Joshua trees are in the pipeline, but not yet finished.

I strongly recommend deactivating everything you have on that sheet so far and trying an RGB Process Matrix. You can always turn the other stuff back on if the matrix doesn't work, or you can't get the colour right. Ralf's video showed a dramatic all-over colour change.

To make things paler add small amounts to the last column in the effect.

I recommend even more strongly, that you watch Ralf's video. He also demonstrates how to adjust the shadow length for the ends and dips really well.

I think I'm finally happy with the palm trees.

(work continues on all fronts, so don't think I've forgotten other types of tree)

The cliffs have map files, which are set quite dark to simulate vertical faces.

The problem here is that I designed them originally for a much darker style than Cities of Schley, and never tested them with that style.

There are more cliffs to come in the bonus issue, so I could try to do something about it there.

I think this one has already been asked and answered by Remy in the Welcome thread at the top of the forum. I don't think Vanilla supports it.