Hey, I hope this isn't any trouble but I'm going to undo the edit you did to the Nemesis picture as the one you added is from ORC which we have a separate tab for, the image isn't going to be removed I'll just add it to that respective part.
Just so you know, you inserted an image file within subheading coding. I take it you were using the visual editor. To avoid such calamity in future, go on to Special:Preferences. Then, click on the "Editing" tab, deselect the first box and save the page. You will instead view image files as their codes (e.g. [[File:Example.jpg]]), allowing you to place them around the article without inadvertently braking a line of code.