I heard the first melody and didn't really expect it to go in the direction that it did. But it sounds pretty happy. The song is nice, but there really isn't much of a structure to this song.
First of all, the drums never go anywhere the entire song. They need to be picked up and brought into a real drum beat. It really sounds bland as of now.
The guitar is nice, but that doesn't really go anywhere either. It needs to be made into a real guitar riff. This is a great opportunity for your drums to pick up more. And of course the bass guitar in the background will follow behind both of them.
The guitar, bass and drum kit combination is good, but I think if you want to go for a fuller sound, you need to add a little bit more than that, or use a better guitar sound later in the song.
The feel of the song really makes it uninteresting. But that can be changed if you were to add some more upbeat parts to the song.
Overall, this needs some work, keep at it though man.
Also it'd be great if you could check out my original song "Stranded" and give some feedback!