BDO Fashion's character galleries are a chance for people to show off their characters. This is not intended to be a template sharing site, but people can choose to include one if they want. If there isn't a template link on a character post, the submitter did not include one. Don't bother to ask me for the link (here or on social media), I don't have one. Repeatedly asking for one in the comments or saying "where's the download link?" is unlikely to convince the submitter to provide one. Adding your email address to the comments is an excellent way to ensure you receive a ton of spam email.
Source: Crafted at Costume Workshops or received from a fishing quest chain started at Crio in Velia. Can also be bought from other players from the in game marketplace. Life skill vendors do not sell fisher outfits (the only one they do not sell).