Legal/moral issue about a contest entry.
I believe in giving credit where credit is due, and I was going to gain permission to use this papercraft in my project from the original creator. Unfortunately, the site where it was originally posted, and any potential communication with the creator, has ceased to exist.
I was planning on using this papercraft in a similar fashion quite a few years ago, sent and email, and recieved permission, but because it has been so long, I was going to do it again.
Is it alright to use the papercraft (giving credit to the author) in my contest entry? What should I do?