I notice in the Art forums that a whole lot of pictures are no longer there. Even in some of the recent pages.
Now I know stuff happens and time passes but please, people, take my advice and find somewhere permanent to upload your images. I would recommend
Servimg. There's a lot of banner ads but with Adblock, it's super nice. I've uploaded pictures there from, oh, 6 years ago and to this day they're still completely viewable.
However, if you don't want that, then Imgur should work for you as well. Take your pic. (pun intended)