14Y.O. JBP Cascade from Seed

This is (I think!) one of my more promising projects- a Japanese Black Pine grown from seed.  It was in a grow pot for about ten years then in the ground for the last four.  In early Spring of 2018, I put it into its first (large) bonsai pot. In a year or two I will put it into a smaller, more aesthetic pot.  Any suggestions for pots or refinement appreciated.

Hi, I'd slip pot it into a larger pot every year to increase the thickness of the primary branches and cascading leader. I'd also put more shape into the primaries, at least the first 6 inches of them. It needs girth and shape but be careful not to shade out any foliage or you might lose the pads that don't receive enough light. Take into consideration the eventual needle size though when putting more bends into the primaries so that when the bends are full of foliage they aren't congested.

this may be hard to swallow, but i would maybe consider losing that top leader and building a cascade from there down...

I am not great with pines yet, but i do know that with all that apical dominance in a pine, the lowest parts will most likely eventually get weaker and weaker...

so, i reckon it really depends on which way you want to go in the long run... up or down ?