It is likely that you typed your whole book with double-spacing for the lines, like you were told to do for manuscripts.  EBooks don't use double-spacing, so we convert the whole thing to single spacing.  We keep extra spaces above the first paragraph of every chapter, and above the first paragraph of every scene-break, using vertical white-spacing for visual impact and clarity of the storytelling or information. 

It is likely that you typed your whole book with double-spacing for the lines, like you were told to do for manuscripts.  EBooks don't use double-spacing, so we convert the whole thing to single spacing.  We keep extra spaces above the first paragraph of every chapter, and above the first paragraph of every scene-break, using vertical white-spacing for visual impact and clarity of the storytelling or information. 

Important Fact!  

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Booknook.biz is the ONLY company on the Official Amazon Publishing Service Providers and Resources List located in the USA or even in North America. 
We've made more than 4,000 eBooks and hundreds of print books.

(See it for yourself: the Amazon Publishing Service Providers and
Resources List in their Help pages, right here:  https://kdp.amazon.com/en_US/help/topic/G201723120 )