Entryway Cantilever Extension

I want to add a 2-foot cantilever to both sides of the foundation of my 5-foot entry from my attached garage. I have a basic sketch and original house plan with notes on it for reference. I need engineered... (Budget: $250 - $750 USD, Jobs: AutoCAD, Building Architecture, Building Design, Building Engineering, CAD/CAM, Carpentry, Civil Engineering, Construction)