the most wonderful thing is when you discover an interesting chord progression by accident.
my accompaniment to Bushes and Briars,is a case in point,I did not sit down,and write the music out,I was just messing with shapes on the guitar,I had no idea what the chords were until I sat down afterwards and worked them out[so that I had a record].
I would recommend all guitarists,make a diagram of their fingerboard,then learn how chords are made up,then at a glance its possible to see where all your alternatives are.Dick Miles