Robots, Statues, Boulders, and Trees (EoW Thumbs)

[Moai]

I'm seeking out some critiques for some EoW thumbs that I'm working on. I'm more concerned about the first one and the third one, since those are the ones I'm most seriously considering taking further, but I'm open to crits on all three.

Thanks in advance!

[Hyaloclastics]

I think the third one is the most dynamic composition out of all three so far.
The first one is a good idea but maybe you need to play with your angle a bit...just to make it more exciting.And i think it needs more space at the top and bottom of the picture.

[Moai]

Thanks for the input, Polonoid!
Someone over in the EoW thread gave me the excellent tip of combining the first image and the third, so here's the results of that. The values probably need to be worked out some. Your thoughts, anyone?

[cubesoflard]

I like your rock patterns you got going on. I don't really know about the trees in the background. Maybe if they matched the one in the foreground. I like your color scheme. Be cool to see how it turns out.

[Marty666]

Nice ones, I like the first one best... The last one is a bit pale, you might wanna play with levels/curves a bit.

[Moai]

cubesoflard- Thanks for the comments. I'll think about what I can do with those trees.
Marty666- I was trying to get a nice value contrast between the foreground and background, but apparently the saturation went way down as the values became lighter. I'll see to that.