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If you're looking for something to do why not look over the Forums or more specifically Narutopedia Collaboration for a list of projects we're working on. And the Community portal has a lot of recent discussions and places to go listed on it.
The image you're adding to Sasuke Uchiha's infobox has no fair use rationale or license status and as such cannot be used. You will also have to bring up a discussion (preferably on his discussion page) as to why you want to change it.