I have been playing for a while, and my skill is pretty good. But I do have trouble creating my own riffs sometimes. I feel like i get stuck in certain scale patters and cant go outside the bar. I play death metal. I have been trying to learn the fretboard in standard but i dont play in standard all to often, in fact there isnt really a single tuning i stay in...i play alot of cover which has be re-tunning quite often. Is it necessary to learn all the notes? Or would I just be better off learning octave patters? They wouldnt change with tuning correct? I really dont no any theory so please bear with me lol.