I had to actually google how to select my character so I could post on the forums for an error I was having. I tried selecting the panel and it lit up orange, but clicking save brought me back to the same screen over and over. I hate to admit that I couldn't figure it out without help.

It's very unintuitive that you need to actually select the star above the character portrait instead of clicking on the panel the name and everything else is in. As far as suggestions go, I'd say from a UI standpoint even just some instruction text telling you to star the main character would be great and would have at least helped me a lot.