Hello, thank you for welcoming me into the wiki community, I appreciate it.
I do have a question regarding submitting pictures and under what liscense they should be in. I replied to your initial message about this, though I do not know if you were notified. More information for my question is on the reply in my message board. Please respond at your earliest convenience.
That message was actually an automatic message, which means they aren't actually sent by any Admin (although it does look like it). But regarding your message, there's isn't actually a lisence that we use on this wiki (you can always post a link to the Twitter or pixiv post where you find the images), and fanart should not be posted on the pages itself.