Help me pick my cover art

So in preparation for July 31st (the novel contest I'm entering), I'm trying to come up with some cover art for my book "The Trinity".  I'll post a picture from time to time and I'm looking for some feedback.  So here's the first cover image:

And here's an inverted copy of the same picture:

Thoughts?  Critiques?  Offers to make cover art for me in return for eternal gratitude?  Or, maybe a nice credit on the book cover and insert?  Perhaps a life of wealth and luxury (down the road)...