About the image
When you create a new article with a template, and you don't have the banner for the artist website, don't put [[image:]], just leave it blank. This won't show anything in the left column of the template.
And thank you for contributing too.
Some formatting issue
I just checked the last edit you made and corrected a few things.
Don't forget to make the internal linking for the artist's work, and don't put in parenthesis his position. And check the work, Untitle Konami game isn't a work.
For the alternative name, don't forget the bullet point for each name. If you have both the japanese and the romanji, it should follow this form :
romanji / japanese