Gelatin Plate Printing

I recently took advantage of an opportunity to take a Gelatin Plate Printing class with a new local teacher, Susan Gantz, at Artistic Artifacts.  This was another chance to play with a technique I haven't used much recently, although I have played extensively in the past.  Susan had some really wonderful and intriguing samples and I did get some insight into how she gets her results.  However one difference is that she prints more on paper than fabric, so the results will vary.  Some of these prints are on paper and some are on fabric.  Can you tell which is which?