Sorry for this massive delay in my response.
Here are the cards I've received so far:
hpulley: It was your photo I kept on the top of the other cards, I really like it's colours. Although in B&W terms the contrast might be a bit excessive, I think these vivid colours work really well here.
anikin: Nice winter scene. I guess I'd be rather skiing than playing the xylophone.
George Nova Scotia: I like very much your choice of subject, as well the light. I myself photographed late 19th-early 20th century steam engines and carriages during the summer in an old warehouse, so I was happy to see one on your card.
Trond: Lovely minimalist photo, it got me first thinking about its scale. Also, great tonality.
Mark Rewald: I'm happy to see you had fun with the Canon 600 mm lens. I can't imagine myself using one but it was pretty much mandatory for your photo.
mooseontheloose: This is one lovely photo, Rachelle. I really like not only the composition, but the distinctive halo around the white line. Great job.
rst: An unusually sharp photo from you, Ruediger... I like the simplicity and the nice tonality of this image.
ccross: Thanks for sharing this photo with us, the water feels so plastic I could almost reach out and take a handful out of it.
Roger Thoms: Thanks for telling us more about your process, I believe you've quite a successful combo in your hands.
Dave Martiny: I like the simple harmony of your photo, although I might have tried printing it on a much higher grade to give it a punchy, more graphic look.
drpsilver: A beautiful contact print, it seems I can't spend enough time looking at it.
hwv: A rather unusual, interesting crop of this iconic structure and great tonality, of course.
andrew.vartabedian: I always had a soft spot for beautiful riveted structures, it looks rather indestructible, yet refined at the same time.
ndrs: This photo really works for me, beautiful detail everywhere and the important humorous element: your shadow; but honestly, I think the composition and the interesting play with light could alone make this picture. Well done!
semeuse: I like how dreamlike the cross-processed colours make this photo. Thanks.
masimix: A great image, put together well in the camera. Also, printed on a lovely paper, thanks.
Valerie: A humorous subject, taken one step further by using a Brownie.
Allen Friday: This photo makes me feel like I was there, too. Thanks.