I think your scape would change dramatically if you
turned the driftwood upside down, so that they look
like they are growing from the substrate. If you want
the fallen tree look, then fine. But I think the scape
would come together more if turned.
I'm liking the way they are now. Perhaps if I get bored with it one day I'll see if I can flip them, or at least one without disturbing the plants too much and see how it looks.