I think the more techniques you learn the easier it is to sound original. I remember back when I first started playing all I knew was how to play a power chord.. so no matter what I played I pretty much sounded like Nirvana or Green Day... you get the idea. When you start adding different styles and techniques to your music it will sound more and more original. Also the more you broaden your musical horizons the less likely you are to sound like any one band.