The conclusion should summarize your ideas and return to the "main concept" you introduced in the introduction. Remember that writing seldom entirely changes a reader's mind. Instead, effective writing leaves the reader with questions and pushes them to ponder for themselves. This is exactly what you want to happen when putting together a portfolio piece. In order to create a strong conclusion, you need to provide clarity on three things: what was accomplished or achieved, what needs to be done in the future, and finally, what has been learned from this project. Each element should be included in your conclusion in some form or another so that readers will understand their importance in relation to the topic at hand.