Strong collaboration requires strong communication. Building a culture of strong, open communication is critical in the success of teams.
Good communication is clear & concise - it gets to the point and stays on the point.
Good communication is correct and consistent - it’s fine to not have all the answers, or be confident about something. Giving a solid answer may require some research and it’s likely everyone will benefit from it.
Encourage participation in discussions, and ensure contributions are heard and considered.