Thanks for taking the time to listen to it Errikos.
I was not very happy with the result and yesterday I made some changes to it, precisely I increased the tempo a little.
I removed some notes from the guitar and adjusted the speed.
I take note on the high note, if it seemed sudden and out of place it is good to know it for me, I was already used to hearing it and since I knew it was going to sound I did not have that feeling.
I have also done what you say about lowering an octave the last melodic phrase.
For some time I have been thinking about buying the standard Concert guitar, but except for the harmonics, I do not know if I can take advantage of this piece, I will think about it.
I upload the update to see if you have some time and you see it better or worse;) The first note of the guitar is not possible with that tuning, but at the moment I leave it like that, in that part I would like to use harmonics.
Excuse my English, I hope to make myself understood.
Thank you very much.