If you’re not comfortable getting up in front of the entire congregation, consider asking if you could share your testimony in a smaller class setting.
Study The Living Christ: The Testimony of the Apostles and draw comparisons between it and the verses you read. Find areas where you could seek to strengthen your testimony.
For a very in depth study of Jesus Christ, reading Jesus the Christ by James E. Talmage and record your testimony of your knowledge of His Atonement. (This would definitely work as a project!)If you have more ideas or a personal experience you want to share, send them to firstname.lastname@example.org