YouTube Channel Growth for Drawing Videos

I'm seeking an expert to help me grow the watchtime on my YouTube channel dedicated to drawing videos for children.

Key Responsibilities:
- Improve content to enhance engagement and retention
- Optimize SEO to boost visibility
- Promote the channel on social media

Ideal Skills:
- Proven experience in YouTube channel growth
- Expertise in content creation and SEO
- Strong background in social media promotion
- Understanding of children's content on YouTube

Please provide examples of how you've increased watch time on a channel in the past.