No sorry that's fairly simple and easy to explain but I should have a faq for how many times it's been asked. Someday.
The wire goes through the front of the lure and as you pass through the belly hole you captivate the swivel opening through the wire while continuing to pass the wire through. Not sure but I think I show this on the youtube wire bending video I did years ago.
You can put the hardware in whenever you like. Some people paint over it, some do it after it's painted and clear coated. Fish don't care...It's all in how you want it to look when it's finished. If you think making it look like a ferrari is more appealing to a fish or you like it better then paint and hardware. If you just want to make something with minimal time and investment and catch the same amount of fish then hardware and paint