Having now made a plethora of photobooks, the experience leaves me with a few pertinent thoughts:
1 - Have an interesting cover, with the title on the spine where the book structure permits.
2 - Control the number of pages.
Eighteen  appears the appropriate number of images for a casually read handmade photobook.
3 - Let the reader tell the story.
Resist providing supporting text, though I have noticed people enjoy reading anecdotes as an Afterword.