I tried cyanotype when I was in art academy. I had to say that is amazing to see the effect of paper on photos.
And here are some digital scan of them.

I choose some old pics to make the films for reprography, some of them were took by films and the others were digital—— it doesn’t matter. To print the films for reprography is really easy, you can even do it at home, well, since I was a student that time, the only way to print was to go to the print shop.

The medicine was made by ferric ammonium citrate, but this kind chemical was green—— it usually was brown. Somebody says that the green kind could make deeper effect, but for cyanotype was still not enough. After 5mins exposured, I use hydrogen peroxide（you can buy it in any drugstore）to make the indigo deeper,

and that’s what it looks liked.