One possibility is to place a lot of wire on it and to twist and turn and bend until the trunk is quite contorted. The result is as you see. The foliage canopy will need shaping but for now it is being left untouched to allow the trunk to grow and to hold the shape we have set into it with the wire. Literati or bunjin is the closest shape or style grouping in which this might fall.
I perhaps may change my mind and move the trunk into another shape.
Any thoughts?
Or is this shape more pleasing?