Hi and welcome to the forum. I listened to your first song. I know you say the lyrics are non-existent, but you're singing and I'd like to see the lyrics you chose for your demo. I couldn't understand all the words you sang. Or are you saying the words you sang are just place holders and not what you intend for the final song?
I'd have to listen a few more times (and I don't have the time right now) to give a more informed opinion, but I get the impression that the melody will work, pretty much as it is. I think it needs a little more development; the song is on the short side and could stand to be longer.
I suspect your long-range plan would also be to develop the accompaniment in some way, either by building up the piano part or by adding more instruments?
I like the sound of it so far and would like to hear a more fully developed version.
Vicki