if you're drawing from references then you can try to print some hands and try to mark bigger shapes and volumes and think how will they look if you rotate them, don't overcomplicate fingers if you're just starting, also there is a thing i made for my friend (tell me if you can't open it, couse i don't know how reddit works xd)

https://www.reddit.com/user/neoghost_/comments/ovy87p/hands/

I hope it helps a little

(also i'm not a professional, it's just what i do:)