The editor needs to be very simple to read. Basically, showing the map on the screen, and on the side a bar that lets you select props and stuff to put on it, and then you just drag that prop onto the screen and put it there. There should be a thing where you can select the ground texture (snow, grass, dirt, dirty grass, etc.). and...ummm...I just lost my train of thought. Anyway, here is a picture of an owl. http://www.orlyowl.com/orly4.jpg