at this point improvisation isnt my concearn, i would just like to write something worthy of recording. ive just been sweeping on the same chords the guitar is in at any given point. i want something not necessarily more complex, but unique. but im thinking unique also means more complex, which i would warmly welcome. i know the bass should keep the rhythm but i dont want to just play one note in each progression. playing in high frets is a good idea to try, but it still is just picking up and down the chord. i guess my question might be more of a technique question than a theory question. anyone have any ideas?

thanks for your responses