Three things you can do to make your talks better:
1. Don't refer to a slide without describing or reading it. Saying something like "and then you geht this" and pointing to the slide will only work for sighted people, who understand what you're showing, and sit close enough to read it.
2. Repeat comments and questions from the audience so that everyone can hear it.
3. If you use memes (please only do it sparingly) explain them. Don't assume that everyone knows and understands every meme.
