Add Description & Remove Logo on Event Emails

I would like for an event description to be added to the event reminder emails, so people remember why they might like to attend. Also, an option to remove my logo from these reminders. If I'm creating an event image, it's either already going to have my logo on it or be what I want showing as far as images go. It might be better to allow us to add a custom signature to the bottom of the emails, so they can tell who it's from.