Not a Yamadori: Pinus sylvestris

(From a cutting)

It looks like you are taking good care of it. I like the whole image of this one. Will be a challenge to make it more compact, surely such a small tree but i have no doubts.
After a few years of pushing back the growth your hand will look much bigger.; )))

Gasper

Not that you need advise but I thought I would provide my input on the outside chance you might appreciate it anyway.  This next spring let the tree grow totally till about the middle of July then cut off all the new growth back to 1mm above where it started in the spring leaving this 1mm as a buffer to encourage new budding.  The tree will set a lot of buds.  Let them all grow till next spring then remove the strongest buds as the start to open from the strongest areas and the weakest buds from the weakest areas.  By the middle of summer you should have a really well ramified tree with fairly balanced new growth. I have worked on a lot of Scots Pines in this stage of development.