A problem that I've noticed some nonbinary people go through is wondering if they should come out or not for reasons regarding their presentation or pronouns they use. If you WANT to come out, and feel safe enough to, these dont make you less nonbinary or that you dont deserve to be respected as nonbinary.
You're 100% valid if
*you use your assigned pronouns or any pronouns
*you present as your AGAB
*you use gendered terms associated with your AGAB
You don't have to be androgynous, or use they/them pronouns specifically. You can seem to others as your AGAB or as binary trans, but what's important is that YOU know you're nonbinary! Nonbinary has no set look or pronouns.