I got this from New England Bonsai Gardens in 2009. It has come a ways... post #2 shows it in its early stages. This is not a large tree by any means, it's only around 15" tall.
These do not have candles like pines, they put out new clusters of needles along the lengths of the branches, and send out shoots from some of them that can elongate at the tips. I wait till they extend around an inch and then cut them back by about a third. This will lead to new shoots, and ramification.
The thing that seems important for this specie, is proper timing on repotting. If you do them too early, then don't protect them from cold snaps, they can easily die. I read somewhere to do it before the new root tips turn white... but I can't find that article now. They do not like root disturbance in any event, try not to take too much off at once. The one thing they might do is to shed all the needles off. They'll put out new ones shortly, if they're not too traumatized, but it's pretty stressful... Mine did that one spring, since I had to get some old soil off the roots, and it didn't like it. Keeping newly potted trees on a heat mat if the weather is cold seems to be helpful.
The old needles will turn silvery tan, and you can basically brush them off when they're ready. Try to prune the clusters to allow light to get inside to keep any inner buds happy, I take off clusters that are on top or under branches, leaving mostly just the side ones.
I wire during summer, as that's usually when the old needles drop (mine just finished), and it takes a while to get the wiring job to "take". They're springy, and need multiple times to set usually. Just watch that the wire doesn't dig in, as the bark scars are VERY slow to disappear if they ever do.
I have this in 80/20 turface/composted pine bark. They seem to like a bit of organic material.
Hope this helps!