Give a designer feedback they can act on

Describe the effect before prescribing the fix

“Make the cover stronger” leaves a designer to guess what is wrong. “At a small size, I notice the subtitle before the main title” identifies a visible problem that can be tested. Useful feedback starts with the effect of the design, then connects that effect to the book's purpose or audience.

A proposed solution can still be helpful, but distinguish it from the underlying requirement. You might suggest enlarging the title, while allowing the designer to solve the hierarchy through spacing, contrast or a different arrangement. Treating your first idea as the only acceptable method can prevent a better response to the same problem.

Comment on the right version

Give every review a version identifier. Refer to the page, spread or cover option and identify the exact element. If several people are reviewing, gather their comments into one coherent response before sending it. Contradictory instructions such as “use more space” and “fit more on this page” need an editorial decision, not a designer's guess about who matters most.

Separate corrections from preferences. A misspelled name is a correction. A cover image that suggests the wrong setting is a mismatch with the brief. A preference for a different shade may be negotiable. Marking all three as equally urgent makes it difficult to allocate attention and can obscure the most consequential issue.

For a hypothetical illustrated history, the essential requirement might be keeping map labels readable. A decorative initial letter may be less important. If the schedule is tight, that distinction helps the team use the next revision where it changes the reader's experience most.

Keep examples explanatory

Reference images are useful when you explain what they demonstrate. Point to the calm spacing, the relationship between title and image, or the way a caption is separated from the body text. Sending a collection of unrelated attractive covers without commentary introduces more ambiguity than direction.

Do not ask a designer to reproduce another book's distinctive treatment. Translate the reference into the general design problem you want to solve. “The title remains legible against a detailed image” communicates a principle without requiring imitation of another cover's composition.

Review the whole design after considering details. A change that improves one page may undermine consistency across the book. If you ask for a larger caption on one spread, clarify whether this reveals a broader caption-style issue or an exceptional problem caused by that particular image.

Send a short ordered set of comments and state which decisions are settled. Avoid reopening approved choices casually while asking for a final correction pass. If the brief has changed, name that change explicitly so its consequences for schedule and scope can be discussed.

When the revision arrives, compare it with the stated problems. A designer may have solved the issue in a way you did not anticipate. Approve the result when it meets the requirement, and identify any remaining problem in equally concrete terms. A useful review leaves both people knowing what has changed and what decision comes next.