As long as its an alt process - as those you have stated are and from an analogue source - size is up to you 21/4 x 21/4 to 20 x 24
All the best, Carl
Originally Posted by timeUnit
I'd love to participate, is there anything that is out of the question?
I'm thinking of one of these: cyanotype, gum over cyano or multilayer gum.
I'm a beginner... :-)