[Jerom]

I've never used PSP, so I wouldn't know exactly what you mean by that. But yes, the different tilesets would be good for just those layers. Treetrunks would be the first layer, the actual branches and or leafs would be third layer, and if the leafs were to shake, then they would probley be layer 2.

I hope Stefan uses this idea, because I've wanted something like that in the editor for quite some time now. The images for the second and third layers would be easy to make because most of them would be from our own pics1.png, only edited so that they have transparencies(like the trees, the barrels, stones, etc)

Oh yeah! About viewing the different layers in the editor...
It would be just like an NPC without an image to define it, the tile or object in different layers would have an outline of some color to distinguish which layer you're trying to edit.
And you can change layering views. Layer1 visible/invisible, Layer2 visible/invisible, etc. It would just be a enable, disable option to view one, two, or all of them at the same time.