-First, identify the ending of your story.
-Mag isip kung paano mareresolve ang conflicts sa story mo. Wala bang hanging effect?
-Lagyan ng excitements kung may kasunod pa and don't fill the ending of book 1 kasi kung balak mo magbook 2 dapat nakalagay sa book 1 ang thriller with bitin effect na mapapawonder ka sa susunod na season and it depends on the genre of your story.