Don't ask too much. Don't ask about their past relationships, their past lives and more. Don't ask too much about their personal information.
Don't judge their appearances. No matter what are they look like, don't judge their appearances, just treat them as ordinary people.
Don't hide your dating intention. No matter you are a transgender person or not, don't hide your trans dating intention. Both you and your partner need to know about the dating intention.
Don't lie to your partner. This is a tip for all kinds of dating. No matter who are you, and who are you date with, don't lie to your partner.