Most transitioners are quite aware that there is much more to passing than just appearance.
As a side note, we are all aware that among cis-women that we can see those that appear very feminine and some that do not... the same thing as it applies to cis-men, some appear very masculine and some can appear to have some feminine features. We are all very different whether we are male or female
While the makeup and accessories do help with the process of passing, other important things like clothing, hair, nails, mannerisms, voice and voice inflection, body movements, sitting, walking, eating and how we converse with one another.... all of that is obvious if we do any people-watching at a busy place like an airport or a shopping mall, and especially at a restaurant or coffee shop. It becomes very apparent when we just watch the male/female couples and how they appear, how they interact, converse, eat, and walk with each other.