What I want is to not use sat. images. The borders of the terrain tiles are inclusive they do not need to tile.

The actual Board will not need to tile ans, though it will be designed to be expandable there is no need for it to tile endlessly as I will be able to tie it together I am good with layering and the like in photo shop.

the board itself is going to be a basic grassland (without being boring to look at) and will measure about 30 inches square plus edge pieces. The Terrain tile are separate entities and do not rely on anything but their borders for separation from the base board, so players can arrange terrain differently each game.

I have seen beautiful work done on game maps (Battle mats and such ) on drive thru rpg and just need a push in the right direction on how to make map pieces like them