Tips for making posts more accessible to blind people:

-Add text descriptions to images & videos
-Make first letters of hashtag words capitalised, e.g. #DogsOfMastodon
-Don't use long strings of emoji
-Don't do "sarcastic text" with random capitalisations
-If you see #Alt4Me in a post with an image, reply with a description and tag #Alt4You (you can also reply with a description for any post lacking its own alt text)

More info about all of these at:

➡️ https://fedi.tips/how-do-i-make-posts-more-accessible-to-blind-people-on-mastodon-and-the-fediverse