marketing PSD is a different thing than the square picture for the workshop. Check the sliding pictures at http://www.dota2.com/store/. For more info on the marketing art slide to the bottom of this page: http://www.dota2.com/workshop/requirements
Finished the bow . that 256-128 texture is heartbreaking to see in the menu screen:) workshop link : http://steamcommunity.com/sharedfiles/filedetails/?id=168695239
Well they are products I guess. Thumbnails and such get people hyped for the actual item, same with promo images, and the workshop is a great place to attract customers for future sales