We encourage you to make and edit your videos with software such as CamStudio - Free Screen Recording Software (Ex. TeacherTube Tutorials are made with CamStudio), Windows MovieMaker (included with every Windows installation), or Apple iMovie. Using these programs you can easily edit your videos, add soundtracks, etc.
Speaking more slowly and annunciating your words, as well as providing subtitles can help you reach a wider community of viewers. This can be especially helpful for ESL students and deaf students.