This is masterfully done; I've certainly never seen ingenuity like this going towards something on this scale.

First of all, I think that you let your imagination wander with it, which adds to the splendor of it. Secondly, I've certainly never seen a bow like this ever before anywhere else, although mechanical bows are becoming less and less "in the new"...

The technique is magnificent! I could never pull this off myself, and I've seen few other works that use this certain style to such an end. It pains me to say though that I think you went a bit overboard, so I'll give you four stars.

I think that you've inspired me and countless others, so for the "impact" I give it a high point number.

I must say I'm truly impressed! Keep up the good work!

As previously stated: the level of detail in this is simply amazing. The way you've shaded and just generally nurtured every single aspect of this is quite astonishing. That being said I have to wonder: Did you create this hoping that it would actually work if fabricated in real life? If so I have a few minor details to point out. Feel free to take my advice or not(as a bow hunter).

1.) The grip is too small. All of the pieces of this seem to be crafted out of some type of metal or alloy which would make it incredibly heavy unless you are using a very lightweight metal which would tear apart from the strain of use. A bow has to be able to withstand enormous pressure to be able to fire an arrow at the speeds that some modern bows do. In that sense your hand grip design seems both inadequate to support the weight of the bow itself as well as looking all around uncomfortable for the user. I imagine that your hand would cramp up immediately and it would be a huge strain on the arms and even shoulders to hold such a wieldy weapon with such a meager grip.

2.) It could be just me missing it as there are numerous parts and components, but I fail to see an arrow rest. Without an arrow rest the arrow would simply drag down at the front end or have to be held up during full draw by the archer. This could be dangerous if the arrow itself has sharp edges or if the archer is moving as it could result in a misfire. Just for consideration.

3.) Your bow "string" seems to be made of some type of metal material as well. This is a problem unless you're using some type of highly flexible metal mesh that would work similar to a string. The problem with using such a thing is that the metal might become weak after extended use if it even has the strength to support the strain in the first place. Also consider the vibration that the string will undergo during use. Said vibration would be terrible on most metal mesh.

4.) The gear-esque wheels on the "face" of the bow might cause an imbalance in real world applications that should be looked at. Consider making the wheels smaller or using some type of carbon instead of the metal present

5.) Consider adding some type of stabilizer. Most, if not all, modern compound bows have a stabilizer which stops the arrow from "wobbling" when it fires. This in turn helps the arrow shoot straighter.

6.) Finally, the arrow concepts the you've posted seem bulky. It's highly possible that in the real world they wouldn't travel fifty feet if they shot at all. Remember to try and keep the weight down. They would probably work perfect if they were crafted out of aluminum. Something else to keep in mind is that most metal arrows are hollow, which is the only reason they shoot. A solid metal arrow is heavy.

Those are the main details that I can see causing issues. Overall it's a really unique and interesting design and I personally would love to have a working model. One cosmetic thing I would suggest, and it's purely preference, would be adding some type of sights.
Great concept and keep up the good work!