Document prep for printing

No, except for maybe lack of knowledge about the right way of doing it.  Does that affect the end quality?

Well it actually just gets stuck....no error message, but stuck at 43% no matter what I do.  I finally have been able to upload the pdf by exporting manually rather than using the Blurb plug-in for InDesign.  However, I still have the same question.  It will probably work as is, but am wondering if I could do a better job preparing my documents for press as the linked files (Illustrator, Photoshop and photos) were collectively quite huge in size for this 72 page book.  I laid out the pages in Illustrator:  I placed photos, placed artwork from Photoshop (Procreate artwork exported to Photoshop as psd), and created vector artwork mostly out of manipulated text.  I then placed this into InDesign.  I am wondering if I should take other steps to better prepare my work for printing or if my method was good enough.