This lovely big Chinese fan tracing worksheet provides excellent practice for younger children, who should trace between the dotted lines. Older kids, or those with better pencil control, can trace along all the dotted lines.
This rat tracing page is a fun way to work on pencil control. Younger children can trace between the dotted lines, perhaps with a crayon or marker. Older kids can trace over all the dotted lines for a more challenging task. You could also laminate the page and re-use it using a dry wipe pen.
Here's a challenging rooster tracing page for the kids! As long as they take it slowly and trace either within - or on - the dotted lines, there's no reason they can't come out with a good result.