Potawatomi,
There are several statements in your post I disagree with.
You state that is wire is cutting in, it was put on too tight. False. Wire starts to "cut in" because the branch is growing thicker, and grows around the wire. Loosely applied wire is both unattractive and less effective than properly wrapped wire. You are much more likely to break a branch when bending it if the wire is loose.
You state state you will wrap a second wire parallel to the first if the first doesn't hold a bend. Yes, that might work, but what you should really do is remove the undersized wire and replace it with a properly sized wire. A single properly sized wire actually has more holding strength than two weak wires. And it looks better.
Aluminum wire makes poor guy wires. It stretches. Guy wiring is only used when regular wiring just won't do the job. You want the guy wires to be as unobtrusive as possible, and as thin as possible. 18 gauge copper is really thin, and remarkably strong.
When wiring the small juniper twigs, even the smallest aluminum wire is too fat. I would use gauge 20 and 22 copper for that.
Plastic tubing around wire holding the rootball... First off, if the wiring is visible after the soil is filled in the pot, it isn't wired in properly. There are ways to secure the tree in the pot without having to loop a wire over a surface root.
I know, it seems as if I'm a jerk pointing all these things out. I teach people how to do bonsai. I see them making these common mistakes, and teach them to be better. Oh, I hear it all the time, "but I was taught to do that from so and so person"... Well, so and so was teaching poor technique. They didn't intentionally teach poor technique, they just didn't know better.
Unfortunately, I do. So, I feel compelled to stop the flow of misinformation and guide folks into better practices. Ultimately, you will make better trees.