<p>An image showing some cravat-tying illustrations (engraved by George Cruikshank), and also partial descriptive text, taken from "Neckclothitania or Tietania, being an essay on Starchers, by One of the Cloth" (published by J.J. Stockdale, Sept. 1st. 1818).
</p><p>This contains factual information, but is also a caricature of dandies who allegedly devoted exaggerated importance and great effort to the arrangement of their neckcloths.  It contains some over-the-top facetious touches -- such as "Yeux de fille en extase" as the name of a color(!).
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For more of the text of Neckclothitania, see Anne Woodley's site: <a rel="nofollow" class="external free" href="http://homepages.ihug.co.nz/~awoodley/regency/tie.html">http://homepages.ihug.co.nz/~awoodley/regency/tie.html</a>
<bdi><a href="https://en.wikipedia.org/wiki/en:George_Cruikshank" class="extiw" title="w:en:George Cruikshank"><span title="British caricaturist and book illustrator; (1792-1878)">George Cruikshank</span></a>
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Mainly scanned from "Fabric of Society: A Century of People and their Clothes 1770-1870" by Jane Tozer and Sarah Levitt