Help me start my own clothing brand!

Coming from a country with bad economy and little job opoortunities, I’m looking to start up my own retail business to support myself & my family. Have you ever entered a shop, browsed through and realised that the items you really wanted were just not your size? Or not the right material? Or you wish it was just cheaper?! Exactly my problem too! I have endless of brilliant ideas for clothes that would cater to people just like you & me. I’ve got designs on pen and paper, and more in my mind. All I need is for you to help me out!