very nice bepo, as ppl have said its alittle plain... so u could make the river look like running water, putting some more detail into it. also make the smallest little rapids where the rocks cross the river (because thats waht happens lol). also the river looks as if its flat and the same height as the grass, almost like a puddle. maybe make the ground dip down so it looks like its holding the water (hope u get what i mean) do that along with some of the other ideas that were posted, and u will have urself and even more of a awsome pixel sig 4urself.