Not very romantic, but a fort like this would likely have a ditch (in Poser???) and earthen rampart (where they put the dirt from the ditch.) Also, some variation in log width and height may add to the realistic look. I have a rather crude ballista and battering ram, but a rolling seige tower ... now there's an idea! And a catapult or mangonel would finish it off. Nice 'Fort Consruction Set.'