Do you recall if you used a red or orange filter on the first shot? Or another colour?
It came out really nice and contrasty.
I don't remember exactly. I believe it was near the blue spectrum but not all the way. Darkened the grass but not so much that it was completely black (which Blue usually does).
And Himu, here's an example of how I shoot a normal multi layered Panoramic...
The numbers 1 through 12 represent a single frame from my camera (its not exact since that image is a 27 frame image but this is just for visual sake).
The line going through the image is the path I took when taking each frame (by swiveling my head, from one side to another and down or up when I need to shoot another level).
That red filled in area is where the two frames meet and overlap (showing you how much I overlap two frames). I just filled in that one spot but every frame needs to overlap, that means the frames to the right and left of eachother also above and below.
I then taken all those files, throw them into a stitching program (like Hugin) and let it do its thang. By overlapping your frames, it allows the program to better assess where that frame belongs and allows it to better blend each seam.