BioWare just released the texture artwork for Tallis' costume in the hopes that cosplayers and fan artists can use this resource for their projects. Anyone who shows up to BioWare's Dragon Age panel on October 15th at NY Comic Con with a completed Tallis costume will receive a prize for their efforts. Also, those who can tweet their fan art and/or photos to @dragonage with the hashtags #dragonage and #fanart will have an additional chance to win something. Deadline for Twitter submissions is November 1.
Greg Aronowitz, who created the original Tallis costume for the Dragon Age: Redemption web series, also did a writeup of his development process for the Tallis costume, complete with sketches and photos.