First, quit removing all the interior growth. “Opening it up” makes it look like a Bonsai at first, but you’re actually removing the growth you need in order to ultimately make the tree compact.
Second, are you going for a multiple-trunk style, or a single trunk?
Third, do you know what kind of tree you have? Spruce?
Fourth, where are you in this world, and are you keeping it outside?
First, quit removing all the interior growth. “Opening it up” makes it look like a Bonsai at first, but you’re actually removing the growth you need in order to ultimately make the tree compact.
“Opening it up” makes it look like a Bonsai at first,
You can remove some foliage from the ends of the branches. You can start by clipping each branch back to a split. That way it doesn’t end up getting “leggy.”
I can’t tell from the pictures whether the tree looks healthy or not, but if not then you should probably wait to prune.