I really like the notion of finding Eden. I think the composition could be more dramatic, however. Reducing the brightness of the cool framing cave would focus more attention on the garden. The Rule of Thirds would suggest moving what are now the centered elements of the garden to the left. I would also move 'Eve' as far to the right as possible consistent with retaining appropriate modesty so the waterfall doesn't look like it's cascading onto her head.

Good concept. Dan already gave some good suggestions, i can only add that it would have been nice when the constrast of 'Eve' was lowered, to merge more into the garden.

Congrats on 2nd. Place and Happy New Year!