A couple of things I've learned recently about norms here:
CW is great for a lot of topics, not just NSFW or violence. Think of it like a "headline" or "subject line" for your post and folks can choose to look at it or not. Use them often.
Policing CWs, especially by BIPOC (Black, Indigenous, and People of Color) member is NOT okay.
alt-text for photos and pics is incredibly useful and important for accessibility. Try to get in the habit of a quick description when you post a pic.
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Hashtags are great and should also be used liberally -that's how we find stuff we're interested in, across the fediverse. HOWEVER, Hashtags fuck with screenreaders, so please use them at the end of your post, in a hashtag block, not scattered throughout. (I just learned this recently).
