the breadth I had in mind - stereo sound expansion of the entire mix. The guitar can not be recorded. there is a good library for “kontakt” - “strummed acoustic 1 and 2” and many other libraries. They sound great and you can make the sound in stereo.
Uncertainly, I meant - the track does not pretend to be professional on the quality of production, as if this demo track.
I recorded for you my version based on your main melody. I certainly do not pretend that my version is better than yours, it’s just that I see it how to improve the composition. I spent a little time on it and this is also a demo :). If necessary, I can send you midi notes of the project. I advise you to choose a reference track (from popular ones on audiojungle) and fully describe for yourself its structure - instruments, arrangement, tempo, length, mood. and do something like this with your own tune.