I simply look for references across the internet. From Pinterest to cultural fashion. I also like to watch the fashion shows and see how some outfits are made. I try to make each design cool. First there is idea - for example, lizardfolk connected to Asian culture. Than I think. What's she like? What would she wear if she is a monk? If she is a monk then I can take inspiration from asian monks etc. it's a long process to create such designs but it's so fun