I found this idea really great: cast plaster tiles where you lay leaves in which will give a beautiful pattern :)
In the end it gives a similar result to the carved plaster plaques, it’s only so much easier this way ;-)
Links:
Plaster Tiles with Leaves (Plaster Wall Tiles Part 2 2008) (Video)
That’s the second part of an instruction, you can find the first as How to make a plaster Wall Tile Part 1
Here at unikatissima:
Carved Plaster Plaques






PDF file ( ~ 1600 KB) at 



On the picture you see a little ‘piece of art’ that was meant originally as a card but is much to time-consuming for this: it is a Clematis petal pressed in an old phone book, embellished with self-made decorative paper and hand embroidery.
Here I’ve pressed a leek leaf in an old phone book, too, and embroidered it.
I don’t know what kind of leaf this is, but I combined it with self-made decorative paper, self-made