Onshape Sketch for Product Design -- 2

I need assistance with creating an Onshape sketch for a product design project. The primary focus is on developing both 2D sketches and 3D models. The specific type of product is not listed among the typical categories such as consumer electronics, household goods, or industrial equipment, indicating a unique or custom product design.

Key Requirements:
- Develop both 2D sketches and 3D models using Onshape.
- Focus on product design rather than architectural or mechanical parts.

Ideal Skills and Experience:
- Proficiency in Onshape for creating detailed sketches and models.
- Experience in product design across various categories.
- Ability to handle unique or custom design requirements.