Sorry, for not having seen this topic earlier, afterall i've initiated it.
why only one pakset? It's still basically a screenshot. It is not particularily large and part of it is covered. In my experience simple and minimalistic images work the best in this. My plan is however to change the screenshot from time to time. Also, clicking it will bring one to the galery, where all other screenshots can be seen too.
google plus cuts of a little from the edge of the width of the image, it ought to be 960 wide, but please don't put anything important to those edges, as they get cliped lateron. Only when looking at the full image, in the galery this is completely visible.