I'm not too sure where i've gone wrong. I did some test runs using a cheap watercolour paper and the standard/ original cyanotype recipe. I then left them for a few days before tea toning them, it took 20 minutes to get a nice result. My arches platine paper then arrived so I did the same tests using this paper. I tried to tea tone the arches platine but had absolutely no change. The only difference between the cheap paper and the arches platine is that the cyanotype on the cheap paper was left to age for around a week, the arches platine went into tea toning straight from the wash stage. Should I have left it to age for a day or two?