I found it! I had to go onto eBay dot com (I usually am on dot ca Canada) and you only ship to the USA so that wouldn't show up on the eBay I am looking on.
Looks good to me except you could tilt the photo the other way so the port side is listing instead of the starboard. That seems to work as people look at things left brain / right brain at times. I have tried both with different items and the left side down seems to sell better.
Oh, and say New York or NY before the word Postmark. I think that that reads better. All just my opinion of course.
' Mail Ship R.M.S. Carmania Post Card New York 1907 postmark '
Link to the Carmania postcard auction:http://cgi.ebay.com/ws/eBayISAPI.dl...hlink:top:en
Carmania card tilted to the left: