Sexing my kitten

I recently got a kitten, abandoned by its mother so not from a store or a breeder where they'd tell me the gender. No idea what breed it is but it has veeery long hair and that combined with the fact that the kitten is very squirmy is making it hard to see what it has under the hood. I also have never sexed a kitten before so I don't know how or what I'm looking for 😅 any advice?