This is a nice first attempt, in my opinion. I think the overall musical composition is pretty good. The one thing that could be improved is the instrumentation. You have, as WhiteCrow said, the same notes playing on multiple pulse channels playing at once producing an odd, and, usually not, a very pleasant effect.
Another thing that needs to be looked at is the volume balancing and the monotony in the instruments. Having instruments using the same duty cycle and volume will get straining on the listener's ears rather quickly. I suggest looking at other people's modules, experiment and make some covers of songs you like to get the jist of how to do it in a "good" way.
Hopefully we'll see more of you in the future. :)