Leonora Carrington' art often touches on alchemy and magic. In her memoir of insanity, Down and Below, she writes of her attraction for chemistry and alchemy.
Some ideas about Carrigton's art:
1- Bosch-like fantasy (she would visit the Prado Museum in the 1930s),
2- humor! (very Mexican)
3- spatial understanding of the quattrocento,
4- make your own personal mythology (in Carrington's case: Catholicism, Jewish mysticism and Celtic elements),
5- be gothic (as be weird)