well it is possible in the way, that you can set a size for QBW... and that you just put a cmd that lunches a phone. AND you just put a image into it, and there it is... but check the QBW thread for instructions of how to do that and the cmd for bringing a phone app you can find on wiki
dbus-send --type=method_call --dest=com.nokia.HildonDesktop.AppMgr /com/nokia/HildonDesktop/AppMgr com.nokia.HildonDesktop.AppMgr.LaunchApplication string:"<application name here>"
/usr/bin/dbus-send --dest=com.nokia.HildonDesktop.AppMgr /com/nokia/HildonDesktop/AppMgr com.nokia.HildonDesktop.AppMgr.LaunchApplication string:image-viewer