The first shot dosn't do much for me, I find the trees too distracting. There isn't enough of them showing to justify having them in the shot.
I think the second shot has some potential, It looks like you darkened it in photoshop or similar which is fine, but it has left the blues over saturated. I think you would get a much more natural look if you desaturated it some.
I like the way the large rocks frame the slime in the last shot. I do find the two sticks a bit distracting but it is an interesting shot.