How to actually be a cis ally;
Standing up for trans people faced with transphobia regardless of if you personally know or like them
Correcting or speaking up against transphobia from friends, family members and others even if no trans people are present
Respecting trans people's pronouns, name and gender unconditionally
Donating time or money to trans specific charities or helping individual trans people who need it
Making the improvement of trans rights a focus politically, joining campaigns or movements to improve trans healthcare, to make transitioning more accessible, etc
Understanding that it is not your place to make judgements on who you think is and isn't trans regardless of your trans partner/friend/sibling/etc saying it's ok
Understanding that you don't have to understand everything about a trans persons struggles, or how they describe or interact with gender or how they present themselves to respect them
Understanding that it is not your place to decide who, when and how people can transition
How not to be a cis ally;
Questioning people, especially strangers, into divulging their personal mental health status before you accept that they're trans
Only respecting certain pronouns and genders
Only respecting trans people that are gender conforming in their presentation or only respecting those who "pass"
Spreading the ideas that some trans people are fakes
Only helping trans people you like or only standing up when trans people are present
Making offensive jokes (e.g. attack helicopter) regardless of if your trans partnet/friend/etc said you could
Involving yourself in intracommunity matters (I.e. being a cis transmed or cis "tucute") regardless of if a trans partner/friend/sibling/etc said you could
Saying people should only transition in certain circumstances or in certain ways (e.g. only if they're over x years old)
Hope that clears it up for some of you!!!