The first thing is this you want to fix how you wrote your attention grabber. Have you ever imagined being captured by pirates or even becoming a thief? In the Runaway King .......
The first sentence in reports and essays is your thesis statement, your teacher should have told you whether your reflection needed one. If so the thesis is never a question, it should be stated as a fact that will summarize the entire essay. In a research essay it doesn't have to be only one sentence long, but this is a reflection. A big no, no is to say I even if it is a reflection of your thoughts or even just the book. Also when you finish writing read it backwards. By that I mean read the last word first, then the second to last and so on. You find a lot of mistakes that way, I learned this from an old professor who was a published author. Good luck on your report and if you need any help I can try to help you.