Please, when updating pages, do so in their entirety so that the change that happened to the page's character is properly reflected throughout the article. For instance, if a character dies, do not simply add the character's appearance of death to the infobox in their article; it's mandatory that the addition be supported by properly cited information available in the History section.
2) Once the image is uploaded, please don't forget licensing.
If you uploaded it through the Special:Upload function, make use of the "Licensing (Required)" dropdown feature before clicking "Upload File," and choose the apropriate type of licensing. "A single panel of a character," "A regular comic book cover" and "Movie screenshot" are some of the most common options.
If you uploaded it through the "Add a photo to this gallery" function on the bottom of galleries, or you didn't select any licensing option in the dropdown feature of Special:Upload, you'll have to add the licensing manually. Go to the uploaded image and click "Edit," you'll see two rows of buttons to insert templates or format functions. Click on the button that has a single polaroid photograph on it (found in the bottom row), and the template will be added. Be sure to fill in the "License" field with the respective license. Most common licenses are "Comic Single Panel," "Comic Cover," "TV Screenshot" and "Movie Screenshot." If the licensing you added is not valid, the image will still appear as unlicensed.
3) Whether the image template with licensing has been added automatically or has been inserted manually on the image, please be sure to fill in the respective fields there are, including "Source," "Universe," "Subject#," etc. to help sort it out.