That's something I did last week. I learned some valuable things in my modules at grad school and last week it was my turn to create a module and present it to a small class. I think it went well. I have heard from the attendees that they found it useful. I'm so glad. The best part is that no one walked out.
Please remember as you go to conferences and pick workshops to attend that the presenters have taken a great deal of time and effort to share information with you. No matter how boring you may find it, or how repetitive. Please don't leave. Consider the person in the front. As writer's we aren't trained to be good presenters. We live in our small offices and write. We speak through media that can be edited and revised. We are not usually face to face. Remember the presenter is simply trying to pay it forward. Be considerate. You never know what kernel of info/inspiration you might get if you only stick it out.
When it's your turn to pay it forward, you'll understand and hopefully no one will walk out on you. Cheers~