The pic is of the unfinished square, block was 1" thick, so the high part of the palm stands a little less than half an inch above the background. I undercut the leaves and top of the trunk to try and enhance the 3rd dimension- the shadows work, I think. I took some liberties with the shapes, curved the edges, rounded over a corner or two- and one triangle got severely modified when I wasn't looking.
The second square- still a Work in Progress. Stay tuned.