Start the children off with this finger tracing worksheet - it's a good way to get them confident about letter formation before using a pencil. You can also laminate this autumn finger tracing sheet so that you can use it repeatedly with a dry-wipe pen.
One of the best way for children to learn the correct letter formations is to finger trace them correctly a few times before trying to trace properly with a pencil. This leaves finger tracing worksheet allows the kids to do just that - and provides a colouring picture for fun, too.