Good ways to change a face picture to a cartoon style picture include:

1. AI Cartoonizer: Use this tool for high-quality, AI images to cartoon. It’s user-friendly and produces impressive results.
2. ToonMe: Available as an app, it offers various cartoon styles and customization options to create unique cartoon images.
3. Prisma: Known for its artistic filters, Prisma can turn your photos into various art styles, including cartoons.
4. Cartoon Photo Editor: This app provides multiple filters to create cartoon and sketch effects easily.
5. Photoshop: For more control and professional results, use Photoshop with cartoon filters and effects to manually create a cartoon version of your photo.
6. Online Editors: Websites like Befunky and Cartoon.Pho.to offer online tools to transform your photos into cartoons without needing to download software.

These tools provide a range of options to easily and creatively convert your face picture into a cartoon style.