You can learn how to use After Effects to make an interesting introduction for your YouTube video by following the steps in this video tutorial. You will need to use a preset called Trapcode Particular 2. 0. Once this trial version is downloaded, go into After Effects and select New Composition. Create any name you want for the file and then select HDV/HDTV for the Preset. This video outlines how to create the introduction from the initial layer to the final layer, which is up to you to decide what you want to do. Then, go under Effect and go into Simulations to access Trapcode, which adds additional definition to any introduction.