Your pattern seems pretty much like noise again. Instead I would try to make it look like waves:
(very quick edit, the pattern isn't good as the grid shows clearly but well you get the idea)
also it seems to me like you use way too much colours, you sometimes use one colour for only one pixel while having a very very close colour already in your picture.
either reduce the colours or use them properly. for example in your version the in the lower left you have 3 tones for the grass, but you mainly only use 2 of them and add some strange dithering for the 3 instead of using it as a shade between the brighter and darker one.