Professional t-shirt designer and illustrator Damian Augustyniak has worked with the likes of Sabaton, Slayer, Exodus and others. Check his portfolio here: http://guzikart.com/portfolio/10% discount with GuzikArt with code lebmetal
Contact GuzikArt via their website or Facebook page (check Links section), and simply ask for the lebmetal discount!
GuzikArt Official website: guzikart.com
GuzikArt on Facebook: fb.com/GuzikArtworks