I may think up some helpful bits for this thread later.....it is an interesting basic concept at least.
Alas, I still haven't finished my similarly-themed prestige class, the Hirotashi Kinu-Tsukai (silk sorcerer, also called a thread mage, puppetmaster, or yao ren), for my Rhunaria homebrew setting. It's primarily meant to be an NPC-oriented prestige class, for scheming peasants or politicians trying to manipulate or subvert and undermine the Hirotashi Empire's government, but since Kinu-Tsukai are usually independant and self-absorbed, some may have apprentices who are not privy to the general plans of the majority of puppetmasters.
The only stuff I have definitely finished for it so far are the prerequisites, basic stats, and advancement chart. They use minor arcane tricks to animate and control both peoples and objects, but especially to animate, strengthen, enhance, and modify threads or needles.
[sblock]Hit Dice: D6
Alignment: Any chaotic
Prerequisites: Must have spent at least a year straight in the Hirotashi Empire training in the arts of this prestige class with someone who already has this prestige class; BAB +3 or greater; Craft (tailoring) 8+ ranks, Craft (weaving) 8+ ranks, Heal 3+ ranks, Knowledge (arcana) 5+ ranks, Perform (at least one of the following: acting, kabuki, or Noh; plus either acrobatics or dance; plus puppeteering) 3+ ranks, Use Rope 3+ ranks; must be proficient in the dagger, dart, and whip; Alertness, Skill Focus (Craft - Weaving), Weapon Focus (either the dagger, dart, mighty whip, mighty whip dagger, shuriken, whip, or whip dagger)
Skill Points Per Level: 6 + Int Mod
Weapon And Armor Proficiencies: A Hirotashi Kinu-Tsukai gains proficiency in the garrote, light lance, mighty whip, mighty whip dagger, net, shuriken, and whip dagger, as well as proficiency in all light armors.
Class...Base......Fort....Ref.....Will.....Special
Level...Attack...Save...Save...Save...Abilities
1........+0.........+0......+2......+2.......Innocuous Weaponry, Patch, Animate Thread
2........+1.........+0......+3......+3.......Bonus Feat, Knit Flesh, Poison Use
3........+2.........+1......+3......+3.......Greater Animation, Thread Net, Weave Magic
4........+3.........+1......+4......+4.......Secret Threads, Lancet Needle
5........+3.........+1......+4......+4.......Puppet Master, Mending Stitch
6........+4.........+2......+5......+5.......Razor Threads, Threadwalker
7........+5.........+2......+5......+5.......Superior Animation, Shifting Needle
8........+6.........+2......+6......+6.......Bonus Feat, Weave Manikin, Greater Weave
9........+6.........+3......+6......+6.......Threads Of Unmaking, Arcane Needle
10......+7.........+3......+7......+7.......Expert Puppet Master, Arcane Threads[/sblock]