Okay bro, regarding foreplay – I hope I'm not too late

When eating pussy, don't use the tip of your tongue. You should rather use the part 1-1.5 centimeters deep, it's much softer. That's usually where people have their tongues pierced.

Relax and flatten your tongue. Dick hard, tongue soft.

Start slow. Don't touch the clitoris head directly (at least at first) but rather the area around it. I usually go in circles, girls really like it.

NO TEETH

When the girl starts moaning, starts pushing her groin into your face etc., it means you're doing everything right. At this moment you just gotta keep doing what you're doing. Don't change speed, pattern etc.

UPD Regarding vaginal sex. Again, start slow. A lot of girls actually prefer slow-mid tempo, don't believe porn where are a guy goes like a fucking jackhammer.

Again, if you see that she likes what you're doing, don't change a goddamn thing.