The book is about how to be better with women, but in an authentic REAL way through self development. Specifically targeted at men in the age of 20 to 40.
We ourselves are a company that teaches men these skills. The book not only contains information, but also some stories from the writer how he was a nerd and changed over time into a casanova.
We don't want the book to be to overly sexy with naked women and stuff. But it should have a little 'edge'. Sensual but classy in other words.
We don't want to use too much color, because the book should come across as very professional and clean. RED should be the main color.
We want a man to see the book, and just from the style feel like: That's what I who to be and read... So no comic-sans like fonts with to much funny stuff.
Have a look at these 3 designs that we like: (as you see, the third is quite different then the rest. Which we also like. Although I Think we tent more towards the first two, unless someone should convince us otherwise).