I printed a much better version of the San Francisco MoMa—Hallway Cyanotype.
First I solved the problem with the vertical stripes doing a “head alignment session” (as there's no program for Linux which can do this for an Epson R200 I had to borrow a laptop from my work…).
Second I think this print is much more interesting with masked margins. The rugged margins of the former version are a bit distracting. Now I even think, that the slight assymetrical perspective isn't so bad at all…
You can still see the old version in the original post and at flickr. But I posted the new version to flickr as well.
