Hi!  I'm a high school science teacher with a question about what the right product is for my needs, and am hoping to lean on the experience of this fine group of experts.  I create short educational videos for my students (and others) that I post on YouTube.  These videos currently include my profile in a corner of the video, while the students see the work I'm doing in the main section of the video (example here: https://youtu.be/LlD0zy9XGl4 ).  What I think would be really cool would be to replace my video image with an animated avatar that talks with my voice.  The big question -- I'm having a heck of a time figuring out exactly which product (or products) here would best suit my needs, or if I'm even in the right place.  I work on a Mac platform, and would love any advice you might be willing to share.

Thanks Much!