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I know that you were using a file from a friend, so likely you were just expanding on this for fun. However, I feel like giving you some feedback anyway :P
I really liked the intro, and the two synth melodies were good. However, you just kept repeating the second one over and over. That'd maybe work for your chorus, but I was really hoping to hear some more melodies. When the pitch shifted at about 1:45, it didn't quite sound right either. Instead, it may have worked better to switch to a new melody line.
The flow also didn't really seem there for me. And, I sometimes was wishing for more to the song. The kicks didn't really seem powerful enough to justify just having them as your main beat. Then the end, the melody just faded in and out without much purpose, leading to a ending that didn't quite feel resolved...
So yeah, that's what I have for you as suggestions. There are some cool things in this song, but it's easier to offer up constructive criticism. If you could check out some of my songs sometime, that'd be great too :D