Small pot'll be easy to mulch down into a bigger pot! No root work!
This is fun! Make a tree that you can't get a lure stuck in!
Sorce
I fell like the song paint it black should be playing in the background.paint skills are off the roof!
then I freaked out and stopped pruning....
bigger picture
Go watch Colin Lewis' tutorial about wiring. It's on www.craftsy.com. It's free, but you have to register. Once in, search for "bonsai".
You should use copper with a juniper.