There are a few things you need in order to create a successful youtube video on your iPhone. First, you will need an iPhone. Second, you will need an app called YouTube Creator. Third, you will need some basic video editing skills. Finally, you will need a camera and tripod. In order to create a successful youtube video on your iPhone, start by creating a basic video. This should be something that is easy to understand and watch. Next, make sure that your video is well-made and has good audio quality. Finally, make sure that your video is easy to share with others.