That was the tutorial I used, but also Geamon's tutorial here: My Battlemap Tutorials. I was having one heck of a time figuring out how to do the linear blend. If you look closely at the river map you can see the path triplicates across the map. It was an error, but I think it breaks up the repetitiveness of the grass. I just need to figure out how to make that water look better with some highlights and such.