Residential Gable Roof Design

I need a detailed drawing to add a gable roof to an existing multi-level residential roofline.

Requirements:
- Professional drawing of new gable roof
- Must integrate with existing multi-level structure
- Accurate based on detailed measurements I'll provide

Ideal Skills and Experience:
- Expertise in residential roofing and architecture
- Proficient in creating precise architectural drawings
- Experience with multi-level roof structures