dude i am so busy with exams and studies so i cud-not completed the map so i will be busy till july 15 or 16 so i am giving you freedom to do whatever you like in my map and try to upload it.... this is the map so far http://www.epicwar.com/maps/226779/
It has been done a very long time ago and now I can't remember how it works exactly, and right now I don't have the time to check the editor, I'm sorry. I will try to answer you back by the time I get my hands back to the map.
There isn't a correct path. You can replace any tile of the same size. A standard tile layout is 16 squares, each square 64x64. Some tiles have an additional 16 squares that appear randomly in large areas; usually grass or dirt tiles. You want to make sure that the tile you're replacing has the same layout as the tile you're replacing it with.
neg rep is negative reputation
Rep that is 1 above is positive
while rep that is below -1 is negative
neg rep means you have done something bad,look down you will see that you have been negrepped because you rated 1/5 on a map for no reason