No big deal. Very few people check out profiles on Lemmy, and they follow communities, not creators like on Mastodon.
As opposed to Reddit's markdown, you
- can embed images with the

syntax - have to add
>
(yes, the space is required) after every line break to make a continuous quote (including at the start of empty lines between paragraphs) - need to use the following spoiler syntax (there are no inline spoilers):
Spoiler Title
Spoiler Content
Also, you can edit post titles and links. And we don't have a contract with YouTube, Imgur or i.redd.it that allows us to simply embed their content correctly (look up cross-domain origin) so you better use a service that just gives the file to anyone who asks via a direct link (the built-in pict-rs
media upload on your instance, catbox.moe or GitHub)