Coming few years I'll reserve the first pruning for early summer because it is still a prebonsai in need of strong growth. Need to thicken some branches first.
In perhaps 5 year, image the tree with a quite low but broad canopy somewhat like a broom but not too formal.
This is from raw material that was dug out in early april 2014, alongside a private road where everything got mowed every couple of years.
*** UPDATE 2018, 4th febr: adding more moss ***