Those guys above are totally right, and about your topic title, drawing doesn't require talent, just plain old passion for art

There's a cliche that went by like this:
Practice doesn't make perfection, but perfect practice does.

Many experience professional artists should know that there are a plethora of aspects involved in creating just a single comic. That includes perspective, shading & lighting, staging, setting, basic geometry knowledge, etc.

I'm not a professional myself, in fact MILES away from there, but I'm still learning to get a grip in various art techniques as I'm eager to. Creating a manga doesn't involve simply just being able to draw humans, but several form of art techniques are combined and interconnected in order to create a aesthetic and realistic story. Do practice in a proper way and try putting yourself into several art medium, you'll never know what you'll get from there.

Be more open; get out and connect with fellow artist, whether in the real world or online. It gets you to build your vast pool of knowledge and thinking abilities in the art field. Being an artist isn't so easy anymore, its all about having diverse general skill sets and being able to tackle unexpected dilemma that you'd face everyday.

Check out CGSociety'sLunatique's post. He's a real good master you can refer to.