A help­ful list of tips from the First Peoples: New Directions in Indigenous Studies blog.

From Dissertation to Book: Advice for Indigenous Studies Scholars

• The book’s con­clu­sion should serve, in part, to lay the foun­da­tion for future research (your own or oth­ers’). So, if there is any­thing you weren’t able to ade­quately address in the book, you can raise those issues in the con­clu­sion and high­light oppor­tu­ni­ties for addi­tional research.
• Limit your his­to­ri­og­ra­phy and lit­er­a­ture analy­sis in the book’s intro­duc­tion. Instead, focus on what con­tri­bu­tions your book will make. Along these same lines, sev­eral of the men­tors warned authors not to “over­si­t­u­ate” them­selves in the lit­er­a­ture. As men­tor Kevin Bruyneel put it, “Don’t sit­u­ate your­self, sit­u­ate them,” mean­ing that the work should sup­port your argu­ment rather than the other way around.
• Over all, claim author­ity over your own voice and tell a story. Going into the revi­sion process with these goals in mind will help you be a bet­ter writer and should help pro­vide struc­ture for the book.

The blog also rec­om­mends From Dissertation to Book by William Germano. Looks like a must read.