Great question @TheMuslimWitch! 
It looks like you’ve already got some great leads on palmistry- thanks to @Jeannie1 for those helpful pictures! 
I know @Silverbear shared a great video for beginners in Palmistry- Do You Read Palms?. You can watch it here:
I know there are a few folks in the forum talented with reading hands- here are some discussions about specific aspects of Palmistry:
Wishing you all the best with your exploration of divination and palmistry, Khadija- blessed be! 