Glad you asked...
You should write about the effect of your study, and how it will change the things. Talk about the benefits it will bring, how it will be helpful, to whom and why.
Then again, this answer might help you...
When writing a significance of the study you want to present why you are doing the study, what you are studying, and what you hope to achieve by completing the study. For more information look here: Significance of Study Example ;

