I know this post is almost a year old but I just came across it.
Here is a Cedar Elm forest that was planted about 15 yrs ago in a work shop with Bill Valavanis. The main tree was bought mail order from "The Bonsai Farm" in Texas in 1977 for $2.95 the other four trees were grown from cuttings from that tree. They were all grown in nursery containers for many years getting ready to plant into a forest.
The movement of first planting was from right to left and then a few years later in another work shop with bill we took the whole thing apart and turned the main tree around, it had a better front, thus movement from left to right.
Sorry for the first pic it was scanned from an old photo.
#1 about 15 years ago.....#2 a few years later.....#3 12/2007, before a trim...#4 10/2006, Pot 26" wide, main tree 34" tall.
Ken