One thing I did when I was planning my school visit presentations was search "author school visit" on YouTube. Among others, I came across a video of a visit from Jarrett Krosoczka, which was helpful to see. I think he has quite a few videos, actually:
https://www.youtube.com/user/studiojjk/videos I also came across a video of Dan Santat talking at a school, and Laurie Keller at a festival, and others that were helpful both for seeing what people talked about, and also how they carried themselves in the presentation. You can also visit specific author websites--some of them might have promotional videos posted for their school visits. Another great resource if you haven't already checked it out is School Visit Experts
http://schoolvisitexperts.com/.
When I first started planning a school visit presentation, I worried a lot that I would be boring. I know some authors have a theater background or can play the ukelele or have other skill sets that they can bring to the live presentation format, but I don't. Watching a lot of different authors/illustrators' videos online, I soon realized that's it's quite interesting to see them just as they are--zany or quiet or somewhere in between--and hearing about how they work. When I went on a school visit tour through my publisher last spring, I heard lots of stories about different authors and illustrators who came to the school. In particular, I remember hearing about a very well-known author/illustrator who surprised the librarian by being very quiet/shy. This person talked about how they like to arrange their space when they work, and the different places they go to generate inspiration, and then they just drew quietly in front of the kids. It sounded like it was fascinating because it gave an honest window into who this person was and how they worked. To me, that's a wonderful takeaway for a school visit to have. It seems obvious to us that books are made by people, but I remember as a kid very clearly being surprised--even shocked--at the realization that there was a person behind the book I loved. Even though I had been writing down the author/title for my school reading logs since first grade, it didn't quite sink in that "author" was a real live person. I took for granted that all the books in my library were just THERE, and it was a bit of a revelation to realize what had to happen first in order for those books to exist. And it was especially exciting to me as a kid because I started to realize that what authors did was something I did all the time: make up stories while I was playing.
The advice I've heard with presenting for the younger set is to keep it shorter--20 minutes, I think? Reading aloud is great (and if you can scan your pages so they will be projected behind you as you read, that's helpful for everyone to see better). Kids love hearing about your pets if you have them, seeing pictures of you when you were young. Save a time at the end for questions, because kids LOVE to ask questions, but be prepared with younger ones to get questions that are really statements, like "my favorite color is orange" or "once my brother stuck a penny up his nose." Or they will ask questions that have absolutely nothing to do with anything you talked about. One of my favorites was a third grader who raised his hand very politely and asked if it was scary to fly on a plane, because he was taking his first plane trip that summer and he was nervous about it.
