You just have to define tags for your uploaded video so when people search for those tags your video would appear as one of the related possible videos to consider on the list.

Take the idea of how you posted a question here at yedda.com and including it in some categories like video, music, humor, videos, funny, youtube.

In the case of your video,  you need to give it a tag that best describes it.  Be as specific as possible.

Also, if tags seem not to work well in this issue, you may blog your video. Create a review about your video and submit it to social sites like digg, stumbleupon, del.icio.us and so on with a link to your video at youtube.com.