Hey there. Your game sounds interesting, but since so much of it seems to be spoiler-based, I'm not sure you'd want to discuss it in detail in the thread. Maybe you'd like to chat on MSN? I'm curious about IT and how exactly the region is different.
first, decide the size of the map (length and width). you usually want it to be even. surround the outside with trees, chose the entrence and exit, and remove those trees. shape the map by adding trees next to the outer ones. ad (if route) grass, flowers, jumpable ledges, and trails. you can ad fences and other things. i'll teach movement permission after.