Jake, you don't need to give them Peach tips, I got it covered.
See the little yellow stick? Press down. Repeat. Oh, and that dash attack is good too, use it. There ya go, the ultimate Peach guide. Use these techniques and you'll likely beat plenty of people who are better than you, and then you'll feel really good about yourselves and have tupperware parties with all the other peach players where you can reasure each other that peach isn't a broken *** character by teaming up on people who complain about her brokeness. Then you'll talk about boys, and how you like them so much more than girls. Did I miss anything Jake? Did I mention the downsmash? Oh ya, I did........ Yep.. that's it..... Peach is gay.