Well, this song can be summarized as A Db D E, E D Db A, with a short drum loop and random Mario sound and music clips thrown in. The song structure (which is a stretch to call it that) is random and boring- none of it seems to fit together and the only interesting parts of the song are the things you didn't write.
For the part of the song you did seem to write, you need to realize that you can't just loop the same 4 bars over and over throughout the entire song. You need to write more than that and add some more layers to the thing.