Looking for a royalty free fanart to print for a convention in Florida!

Hi, ECLegends will be attending the Florida Supercon 2015 from June 25-28 and we are looking for some awesome fan art we can turn into posters. We are a very new organization and our main goal at this convention is to grow our gaming community in Miami and expand our tournaments but since we have the space at the booth, we thought we could offer some posters to the 50k+ expected attendees! Unfortunately, we won't be able to compensate any of your work but we will be willing to ship you a copy of your design printed on some sleek high quality poster paper. Also, without a doubt, we will be providing your contact info to anyone interested in your work and I suggest you sign your artwork! We are not trying to claim credit for anything that is not ours, nor print anything that we are not allowed to. So if you are interested, go ahead and reply to this post or submit a PM through our website with your work!

Ps. If you have already made a post here and that is the fanart you'd like to share, you can send us the link to the post too! Ps2. The art should be available in digital form and relatively high resolution (over 150 DPI preferred)