Here are five images I have to work with:
(http://img25.imageshack.us/img25/5719/15014z.jpg)
(http://img25.imageshack.us/img25/9541/pyroclasm.jpg)
(http://img24.imageshack.us/img24/9676/magicthegathering10thed.jpg)
(http://img25.imageshack.us/img25/8096/crypticcommandartbywayn.jpg)
(http://img5.imageshack.us/img5/9548/mindshatter.jpg)
You don't have to use them all, just use the last two, less than 700pixels wide and less than 300 tall.
Here is an example of something I'd like to see:
(http://img4.imageshack.us/img4/3640/boab26cross1.jpg)