What line weight works best?+
Consistent and clearly visible, closed at every join. Gaps in an outline let marker bleed across the whole page, which is the complaint that generates refunds here.
Should pages be single-sided?+
Say that they are, and design for it. Markers bleed through paper, so a page printed on the back is wasted, and buyers want to know before printing fifty.
How detailed should adult coloring pages be?+
Detailed enough to take time, without areas too small to fill. That balance is the whole craft of the category and what separates a set worth buying.
Does full-page artwork cause problems?+
Ink coverage is not the issue since these are outlines, but artwork running to the edge is. Home printers cannot print borderless, so leaving a margin avoids clipped designs.
Can I sell coloring pages made with AI on Etsy?+
Yes, with disclosure. Etsy allows AI-assisted designs under its Creativity Standards as long as you are clear about how they were made.
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