From: The Big Brotherly Love Apple
I'm sure someone will have more info... but here's my .02...
Unless I'm mistaken, the first pic you submit in your portfolio (the one right after the description of the piece) is the image that is the largest, and which will have the best resolution. So, in the past, if there is a detail that I have really wanted people to see, I've posted it as the first pic, and then posted the whole picture in the second slot.
If your goal is to show the detail very well and it's for the Macro show, would it solve your problem to submit this pic as the first pic?
Peace always requires sacrifice.