How do you become a profesional fashion designer?
Well, you should take some classes in textiles, sewing, and design. These will be helpful for later on. Also get good grades so you can go to a good fashion college like FIT. You should check out http://www.designerbloc.com/ as well. It’s a community for aspiring fashion designers to display their designs, get community feedback, and meet other designers. Good place to show your designs. Good luck!
