I really like the concept of the image, and the tonal range and colours from darks to the vibrant greens.
To take it to the next level, I would do the following;
1) Apply a blur to the front leaves, which at the moment are distracting from the main subject.
2) Try and play down the highlights and strange green lumunious part on the left side of the image.
From a technique perspective, if you are using a small aperture, look to focus on the centre of the subject. This will give a better overall DOF for the 'thingy' rather than providing detail to the leaves in front that draw the eye away.
A repost with a quick blur applied to the front leaves as to where my thought process is on it. Certainly needs some refining if goign that route.