How do I start my own clothing line?

[Alisha]

You need to learn how to sew for starters. When you develop a talent for creating what you envision in your head, then you can worry about the general publics approval and what to do.

Do you have a sewing machine to practice with? If not, those are incredibly expensive. You could technically sew by hand but its a real pain.
Everything else is fairly cheap, though. If you have a sewing machine, go to your local fabric store and pick up supplies. You can start practicing with stencils (of dresses, hats, coats, shirts, whatever you want) and that will get you started. Don't try creating your own designs yet, you need to start with those stencils to understand the basics of structuring a garment.

This takes a ton of practice and the first few things you come up with will suck. Just don't worry about your clothing looking good at first, focus on fit and perfecting the actual craft of sewing.