The auction house now supports artist page. Anyone can click on the artist address to see all his works.
Artists can share their page (all their artworks) on their socials. Example: Ergo Auction House
In general, if you for example have 3 addresses address1, address2, and address3 then your page will be: /#/auction/active?type=picture&artist=address1,address2,address3 - you can share your page to both present all your artworks and show authenticity of NFTs.
The artist of an artwork is determined by who has sent the necessary funds to issue the artwork. So I suggest to use a Yoroi wallet and use just a few addresses in that wallet for your artworks to be presentable easily,