I struggled to find blogs that were specifically body positivity for only non-binary trans folks, but here’s what I found:
Not specifically body positive, but good resources: The Non-Binary Safe Space especially their positive things tag, Fuck Yeah Transitioning Genderqueers, Genderqueer Pride, Genderqueer Positivity, & Genderqueer Identities (this blog has SO many resources)
And another primarily image (not non-binary specific) blog is Genderrific run by my dear pal Kaethe.
The tag nonbinary positivity might also be a tag you’re interested in.
And you might enjoy the Trans* Enough Project.
Apologies if any of these have problematic content as I’m not very familiar with all of them.
And folks should feel free to reblog with more blogs!