A detailed explanation... with picture... of Left Wrist Turn, and Right Forearm Fanning would probably be helpful. Showing Standard, Single, and Double Wrist Action would be even better!
The explanations and photos are all there in 10-18. Just remember that photos 10-18-C and 10-18-D should be reversed.
Also, study the "Useful Combinations" (photos 5-A/B/C/D).
As I look at 5-C-2 (the Right Wrist Conditions complementing the Left Wrist's Flat, Cocked and Turned Conditions) I am taken back 24 years. When I began my study of The Golfing Machine® in 1979, the book's complementing Right Wrist Conditions were identical to those of the Left, i.e., Flat, Turned and Cocked. By 1981, I had come to understand the Right Forearm Flying Wedge, and clearly, a Cocked Right Wrist destroys that structure. Plus, the photo did not seem to show the Wrist as Cocked. So, I telephoned Homer -- by this time he had gotten used to these calls! -- and asked about it. After a brief pause, he answered, "You're right. It should be Level, not Cocked."