I agree strongly with the people from before but I'll see if I can find specific parts of your music to work on.
First off there is too much going on and all of the instruments blend together. (A few slow parts are good though.) The mixing is done poorly, some instruments are too loud some are too quiet, and the sound effect / percussion at 0:27 doesn't fit with the song, it's too loud and long. In general lots of your sound effects seem random and misplaced. The melodies don't really sound too good but they are OK (this goes up with practice). The sound design of your instruments is better than mine though, so some of the solo instrument parts sound nice.
All in all try doing something simple like chiptune and learn to structure your songs (slower notes and fast notes, not just fast notes) and you will see some large improvement. =D