Training an elm Bonsai tree
This progression shows an Elm tree being pruned and repotted. This Elm is 5 years old and was planted in a large pot so the root system could develop well, and the trunk could grow thicker.
The first picture shows the original plant.
Picture two shows the Elm after its pruning. Some branches have been removed completely.
Picture three: The Elm out of its pot, the roots have been trimmed to encourage the tree to grow a more compact root system.

Picture 4: The formed Shohin Tree, planted in a small blue pot.

More information
Go to the Bonsai progression forum.