If the Joker was a female I think she would look something like this. There are many different versions of the Joker so I just put a few bits of each of them together to get the look I wanted.
I started with a white base then using a black eyeshadow I shaded under the apples of my cheeks and around my chin to make myself appear more smiley. I then used the same black shadow on and around my eyes before adding some pinky red also. I added some of the same pink to my cheeks too. Back to the eyes, I added some white to the waterline, come red liner to the bottom lash line then mascara. I made my eyebrows green and added some streaks of green to mu hair too.
With red lipstick I drew the mouth all the way out to the cheeks in a really messy way.