you have to love trans women more than you hate transmisogynists. and i mean real trans women, not this abstract symbol you've created just to defend. the real flesh and blood human beings who are messy and complex and imperfect. you have to love them even when they fall outside of your preconceived idea of what a "good" trans woman must be, when they're doing femininity "wrong" or "not enough", when they understand themselves in terms you find unintuitive, when they're rubbing against your understanding of what a woman should and can be. you have to support the trans women in your life and you have to be kind to the ones you meet and you have to respect the ones on the internet. otherwise you're not helping, you're just using them to play hero.
and when they make mistakes. I think that's the most important part