This is a standard cyanotype I made as a demo for my Hybrid Photo class I am teaching this semester. It's a photo I took several years ago, printed for the first time.
@awty I've had the same problem, even though cyanotype adds contrast, but a custom made digital negative fixes all that. It's all in he curve and ink density. I'm not an immense fan of cyanotype, but I need to cover it in this course. Every time I teach something, I learn something. And it does work for certain subject matter. Th big exploration for me this semester will be toning cyanotypes. That has lots of possibilities.
The newer version using Ammonium iron(III) oxalate gives a better tonal range, contrast and deeper blue. http://www.alternativephotography.com/new-cyanotype-process/ I can get acceptable prints, like every thing alternative process takes a bit of work. I like cyanotype, especially toned with green tea. Best results, partiually bleach and warm up the toner before hand and leave it sit over night.