I am glad to see you are enjoying the photo as much as I did making it. I think I will do some more cabins since this one got such rave review, be sure to see my Britannic interiors under the Britannic tab as well.
But Mary, you know the magician never tells his secrets...
And to answer your question, yes my great grandfather of 98 travelled First Class on the Olympic in 1933.
To answer Dan K's question, I based my photo somewhat on his description of his cabin, which was similar if not identical to the one shown, and the rest I based on gray scale color matching I use when working with converting color to gray and gray to color, this seemed to be the best matching layout based on my method.