I recently posted a lesson on the way Greg Lake accompanies himself now in their classic ballad Trilogy. As it evolved I messed around with the melody and got a few requests to do a solo guitar arrangement.
The song is very free form, as far as the rhythm is concerned, and this lends itself well to playing very freely and with quite a bit of improvisation. It is really just a matter of playing the melody and embellishing it with chord tones in the breaks between notes.
This approach makes the lesson a bit non-specific as far as exactly what to do. It is more suggestions of things to consider and think about. I do not really address the right hand technique much, you just need to “feel” it.