The minute count you were given belongs to somebody else’s paper, sky and season. Your paper tells you when it is done, in colour. Nearly every cyanotype tutorial hands you a number of minutes. That number came from somebody else’s paper, latitude, hour and cloud, and it is the least transferable thing in the process. The ready-coated papers sold today each describe a colour cue instead — and they do not describe the same one. Sunprint-type paper fades toward white in the exposed areas; Cyanotype UK’s yellow-green coating turns blue-grey. Reading the wrong cue is the single most common reason a first print comes out flat or faint. 31 pages, three botanical projects, four printable records, and 10 references — the paper makers’ own instructions, two museum teaching sheets, and Library of Congress and conservation guidance on keeping the finished print. The correction this guide is built on Cyanotype takes about fifteen minutes in full sun, so set a timer and come back. No single exposure time transfers between papers, let alone between skies. The Sunprint walkthrough gives 2–5 minutes in direct sun and 5–20 under cloud, watching the blue areas fade toward white; Cyanotype UK’s ready-coated paper instead starts yellow-green and goes blue-grey, and is washed until the yellow is gone and the water runs clear. Those are different products with different cues. And the colour you judge is not the colour you see wet: the blue deepens as the print dries and oxidises, so a pilot called a failure at the sink is often a pilot judged too early. What it answers How long should a cyanotype be exposed? Why does my fern print have soft, blurred edges? Do I have to rehearse the arrangement first? Why does the print look worse at the sink than it did in the sun? How should a finished cyanotype be mounted and stored? What you get 31-page PDF, US Letter, with selectable text Reflowable EPUB for e-readers and phones — both formats, one price 4 illustrations 10 sources cited inline, every one linked Instant download. Nothing ships. Before you buy This is an English-language digital guide. No physical materials, kit or printed book is included; anything the projects need is bought separately. The 4 interior illustrations and the cover are illustrative images. They show intent and arrangement rather than photographed results from a tested project. Published by TopDigitalKnowledge. Written by Abdelmounim El Moussaddar.