I started out with a copy of 18th Century Hair. I highly recommend that book. Lots of good information there.
I'm not going to go into step by step detail on how to make this wig, because you'll need to buy the book for that, however I am going to share how I "hacked" these instructions.
First off I started with an inexpensive full lace wig. I decided on a lace front because I've dyed my hair hot pink and mint green... this would NOT blend into a wig well. so I chose a lace front to look as natural as possible. I've done non-lace before, and the hair line is particularly non-natural. So, on a lark I decided to try a lace, just to try it out. I like it. I only mention this because the book doesn't offer a lace wig as an option. So that right there is a little hack. from the same company, and in the same color # I bought an elastic fall.
The main part of this little hack has to do with the materials list given in the book... I didn't want to buy all that stuff... like lots of different weaving hair in different textures. I just thought the whole thing was a bit extreme... so here is what I did...
First, I put the lace front wig on a form and mapped out a pattern to make the wire form. If you have the book you'll notice that my form is considerably smaller than what is in the book, this is because I'm doing Lolita... I want over the top, but humorously, a real rococo ship wig is really, really, big, much bigger than I need.
The book would have you at this point cover the wire form with ratted weaving hair. I didn't want to buy more hair, so I instead first covered the form with black felt.
After I covered the form with felt, I sprayed it down with spray adhesive. Then I stuck polyfill to the back and sides of the form.
Once I had the shape I was looking for, I spray painted the poly fill flat black.
At this point I sewed the form to the wig, pulled apart the elastic fall, and used that hair to cover
the back of the form, build the sausage curls and the loose curls at the base of the neck.
This is what the elastic fall looked like as I was taking it apart.
And here is the finished wig: