THE FINAL PRESENTATION
Are you able to answer the judges' questions knowledgeably and confidently? Be sure to use your display while the judges talk to you. It isn't just a backdrop, it's a visual aid to the information that you've worked so hard to obtain. Make sure that you explain every element of the board and make sure that the board looks as professional as possible.
The final judging is mostly subjective. While the judges are looking for a few specific things, the way that you represent yourself and your project, and the way that your display board looks can make the difference between leaving a poor impression, and impressing the judges with your award winning science fair project.