What larger point could Dickens be trying to make with the epilogue of the characters?

This concluding chapter develops the motif of the "pictures in the fire" that appeared earlier. This time, Dickens takes a direct role in the writing, appealing to the audience. The pictures in the fire are a form of augury, or fortune-telling. It is difficult to read, the main argument discusses the ability to predict and prepare for the future. What seems to be the case overall, is that most of the characters' lives change in such a way that they cannot truly predict how they will live their lives. This seems to reflect Dickens' narrative style if anything, for as we have seen he is very fond of plots that twist and turn.