It’s probably doable on Twitter’s end, but not on the user end. You can’t edit them, just delete them.
However even that can be problematic. I’ve deleted Tweets across several accounts I manage and even my own Twitter acco. They will seemingly disappear from that timeline, but when I log out and check from another account or even another device, the Teeet I deleted is still there, just not visible to the account I deleted it from.
Please excuse autocorrect typos!