To ensure effective contributions from individuals with varying skill levels in a 3D modeling project, establish clear communication and expectations. Define roles and responsibilities, use consistent terminology, and schedule regular check-ins. Utilize collaborative tools like version control and user-friendly software. Foster a collaborative environment where team members can learn from each other. Pair experienced members with novices, offer training opportunities, and create a learning culture. Set realistic deadlines, break down complex tasks, and celebrate milestones to maintain momentum and motivation.

Most importantly, proper sprint planning. Let everyone size their own tickets. In tandem, provide resources for people to up-skill and have more senior resources host KT sessions to spread the expertise around. The objective should always be to have a well rounded team.

First I would request everyone for contribution then I would ask their strong area and after that weak knowing these will help not only in this project but future too and everyone would have their chance for contribution

To ensure everyone contributes effectively in a 3D modeling project with mixed skill levels, assign roles based on strengths, with beginners handling simpler tasks like basic modeling or texturing and experts focusing on complex elements. Foster collaboration by pairing less experienced members with mentors for skill-sharing. Use clear guidelines, timelines, and collaborative tools like shared design software to streamline workflows. Host regular check-ins to review progress, address challenges, and celebrate contributions. Encourage open communication, where team members can seek help or suggest ideas without hesitation. Provide training resources to upskill and keep everyone aligned with project goals.