I´ve been looking forward to trying this technique for a few moths until the first really sunny day, which was yesterday. I gathered a few plants from my garden, some of them dry, and a found feather. I think that my first estimation of exposure time was quite right - about 10 minutes around noon (I live in Czech Republic). I really like how the half-transparent dried plant went out and I find quite interesting the texture of the brush with the ferns (in fact I was already running out of the chemicals). Thank you Ben for this amazing class, I will definitely try more on another sunny day. And I would appreciate another, maybe more advanced class on cyanography!