How do I sew in thread in the middle of smocking?

When you are smocking a material, the first thing to do is make sure that your thread is of a slightly heavier weight than usual if possible. To repair a portion of material that has come undone within the middle of the gathered material, it is best to do it bit by bit, say about an inch and a half at a time. It takes patience, but it will work. It's advisable to check for loosening threads and super secure them in tiny little places as invisibly as possible. Where one thread has been torn loose, it's too easy for another to do it.