The next step is to re-thread the stopper onto the lace; but this can be challenging since the stopper is probably spring-loaded, and different brands use different stopper designs.

For this example, we used the needle of a safety pin to keep the stopper open, while threading the lace.

Thread in the lace tip through the opened stopper and then push the rest of the lace through.

Tip: If you've got issues, pushing the lace tip through the stopper, you can use a safety pin or a seam ripper for support.