Answer: The following article discusses pruning strategies and overall care for wisteria, including diagrams. I think it will help you with your project.
However, I should probably caution you that a wisteria vine is large, heavy and strong enough to break apart a picket fence in time. I have seen them with a trunk the thickness of a man's leg! So I am not sure I would recommend planting it along a wood picket fence -- although a sturdy iron one might be okay.
Good luck with your project!
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