The repeating slow arpeggio gets boring after a while, the drum pattern gets repetitive, and the main chorus is a messy bit that adds nothing to the song.
Perhaps change some of the arpeggios to 5 notes rather than 3... for example:
in the fourth bar instead of
C-D-E-C-D-E-C-D
do
C-D-E-F-G-C-D-E
This will give the track a bit more flavour.
Also change the drum pattern to something slightly different to keep it fresh otherwise the resulting music will sound quite repetitive with all the repetitions you're doing with the three notes.
And finally keep the track clean, don't overstuff it with random sounds that don't work together. These bad sections are 0:44~1:20 and 1:53~2:28
Though if you had fun making the track that's okay too. I hope to hear more from you!