No hate, but it sounds like you know absolute dick about fashion. You better study it if you want to start a line. Yeah it's kinda gay, but you'll get to flirt with bitches and you'll know your shit when it's over.
This is true. If all you're doing is printing tees and trying to sell them online/locally, it's not gonna take off, there is simply too many people doing that nowadays. You gotta get informed, get experience, meet people, take some classes, get a job working for a larger label or at a retail store. Then you have to find and develop your brands identity, which sounds infinitely easier than it is. It can take years, but if it's unique and intriguing, people will be attracted to it. You have to give people a reason to wanna rep your logo.