Engineering help, 3d Prototype, Technical Drawings

I currently have an idea for a product that I have been working on for a while, but I am needing to talk to an engineer to take it to the final step. There is one component of my basic mechanical assembly that I am having a hard time figuring out how to properly Integrate. I currently have a 3d model that I have designed in Fusion 360 that is nearly complete, however I want an Engineer to help determine if there are better ways to design for manufacturing, and any suggestions on overall design.
This product is hand-held, and I intend to make it out of metal. My product is in the Fly Fishing Accessories Industry