What I found on the interenet: Verbs have three moods—indicative, imperative, and subjunctive.
Examples of sentences with verbs having indicative mood:
I want a chocolate ice cream cone.
Atlanta is the capital of Georgia.
Coconut tastes funny.
Are you going to the party?
I suggest you do an essay on an important trip/event that happened in your life. But really emphasize what happened. So as an indicative essay, show the reader what you are experiencing.