I think the left side and the right side has "blobby" areas that don't seem to conform to a consistent design principle. I guess what I'm saying is the stock design has an art deco "streamline" design that is consistent down to the faux rivets around the bolt holes. I think any third party design should adhere to some consistent principle as well. The wing profile design is pretty well done in my opinion, so a modification to that design would make it resemble only an altered version of the original.

So what I'm saying is you have a lot of good design cues going, but you should take a larger departure for that center cut out and make it as original as the rest of your design.

Calvin