If you are bridging your Fediverse account with https://fed.brid.gy/ to bluesky, you can also make a custom username for the bridged bluesky handle, if you have a domain.
This is my bridged Pixelfed account:
https://bsky.app/profile/punk.photos
I still have to do this for my Mastodon account...
#mastodon #pixelfed #bridge #bridging #bluesky #fedibridge #decentralization #atproto #activitypub #FediHint #fedihints