Ceiling Vaulting Plans for Single-Family Home

I'm looking for expert plans to vault my ceiling into the attic of my single-family home. The current ceiling material is drywall. I already have insulation in place in the attic.

Ideal skills for this project include:
- Architectural design
- Structural engineering
- Home renovation experience

Understanding of structural plans and building codes is necessary. Please provide a detailed proposal on how you would approach this project. City requires stamped drawings.