You just have to be able to upload them to nostrbuild like any other media
Discussion
Have you added any collections to use with : ?
What do you mean?
nostr:naddr1qqy5cn652gsywj2x2vq3vamnwvaz7tmpw46xstnwdaehgu339e3k7mf0qgs0h2fhgr848r7cn4gztp4cardnasedlvzrv945n5f29py7z67k5pqrqsqqqa2w2zx4wy
I'm not sure what they call it, but you can add these packs and use them by typing a colon. In Amethyst. Not sure about other clients.
nostr:nprofile1qqs27tmg9agj3xv993n9flcxt2jqtfqazh3trjmvj9e3yds9w38sdespr3mhxue69uhkummnw3ezucnfw33k76twv4ezuum0vd5kzmqpz4mhxue69uhk2er9dchxummnw3ezumrpdejqzyrhwden5te0dehhxarj9ekxzmny3vs5at here is Vitor's tutorial on how to do it in amethyst