Well, here, I'll give you some constructive criticism. For one, the melodies are a bit basic, don't be afraid to experiment sometimes. Look up a bit of music theory if you want (although not necessary). And if at all possible, add other instruments. Percussion, bass, possibly some ambient effects, other effects. Sometimes try to make new patterns rather than doing the same one over and over, and add some building transitions. No real offense is meant by this, but this and your other uploads don't so much resemble songs, but instead little demos with one instrument doing the base melodies.