Um.. those are okay.. but they aren't that great.. for one, you need to fix it so the tiles don't overwrite themselves.. Also, the swamp needs to be made so that it uses the corner swamp tiles, and also doesn't overwrite other swamp tiles or other tiles period.. Notice how the path thing that is default actually make it draw a path, however what you made is basicaly doing the same thing as selecting the square of swamp tile, and holding the left mouse button all over a level.
