In my own life I've used/plan to use body modification (broadly) to deal with the external when I feel that mismatch with the internal. Digitigrade stilts, hair coloring, ear pointing/prosthetics, tattoos, piercings, even my HRT pushing me toward androgyny -- all serve to make me more comfortable with the mismatch on both a personal/physical level and a social level, blurring others' perceptions of me as "human." It's not a full transformation by any means, but every bit helps.