My canon pro-100 can't print larger than ~14", but the print competition requires at least 16"20" & glossy black borders (so the black mattes don't work with glossy paper.) The prints that are winning all are printed to the edge, with no matte border. Where can I get my images printed that large on slickrock pearl?

We have a list of print providers offering Moab paper here:

https://www.moabpaper.com/psp