overall that the dark tone is above instead of the bottom makes it look wrong

always take refrences when you do something.

example here:
http://www.inkycircus.com/jargon/images/grass_by_conformity.jpg

the colors there are More natural and the dark tones are on the bottom of the whole grass. Also every grasspalm is seeable. yours is pretty blury for now.

It looks decent but if you want some great grass i would try to make it more like in reallife, simply try to get as much refrences as you can and look at them while working.