This is a very strange picture. I like it. Maybe tilting the camera to get less of the tree that just looks black in the bottom left would have been better. The lighting looks a tad dark on his bottom half but I think you did a good job keeping your subject and the background together. Nice job finding this.
Cool shell, what kind of animal is that? Anyway the strong backlight isn´t helping this shot and the bottom left corner is a bit empty and doesn´t really serve a purpouse but I like this shot, better than average in this competition.
Truly bizarre bug and a great macro. Good use of lighting to bring out the details. I feel the composition would have been better with the eye of the shell in a more prominent position inside the picture.
What I like:
-An unusual, some may say bizzare subject.
-Creative ( thinking of this shell )
-The way he is 'lit through'
-Great oportunities this subject gives
What I dislike:
-The background is terrbile. If you wanted a backlight maybe a paper box painted in black with a torch covered with crepe paper would do the tric.
-Such a subject such oportunities, and well sorry but all wasted.
I give you a 5, why? I wrote :) ( don't be mad at me, just think what you could do better )
Maybe putting this feller in a thick but to the ground layer of smoke? Youdrill a whole in a bottle put a rolled paper in it but not horizontally. The end that you will light must be higher, and from the other side the smoke will come out in a condensed form - not willing to spread - like a fog. Then you put this buggie into this smoke and backlight him with soft and warm light. Torch covered with thick red paper would do. This would even emphasise the bizzarness or unusuality.
I had the shell like this in our garden, but I could not get the light to work as well you as it did for you. Great focus and light that gives that transparent look.