1 thing that stands out for me....
the fact that you completely ignored the restraints of bars, beats and such. I think it contributed well to the overall feeling of the piece. I have a feeling that you didn't, but I definitely can't capture the beat, so you did well at concealing it.
it
The emotion conveyed by this song is amazing. It's peaceful, feels safe, tranquil. I don't know if that's the theme you were aiming for though, as you called your song lost. However, that's the theme you got. And the buildup towards the end resembles two loved ones finding each other.
Not much wrong with the song, I just think that the guitar at the end it a little too loud, considering that all the instruments are at full swing.