How do I masturbate properly?

So ive been trying to figure out to finger myself for about a year because I’m in a long distance relationship but I still wanna act on the way I feel about him if you know what I mean. But I just recently found out I’ve been doing it wrong. Lately almost every time I masturbate I start bleeding out of my vagina. Before I asked my sister about this but she said it’s probably because I did it too close to my period but now I feel like that’s not the case cause it happens too often and I did it tonight and it bleed and I’m like roughly 2 or 3 weeks away from my next period. So I’ve read a few online articles and it sounds like I need to stimulate my clitoris more and go slower. So I was wondering whats the best method of stimulation for the clitoris and are there any other tips I should know cause idk what else to do. I just want to know what it’s like to feel what he feels when he masturbates to me. I feel like I’ve gotten close but I can never quite finish or feel an orgasm and he really wants me to feel that pleasure too.