I really think you should expand your ranges. Try this in measure 1, for example:
double the first bass note down an octave
raise the last three eighth notes by an octave
bring the melody note up 2 octaves, and maybe double that...
the change in sonorities will be huge, and make the piece much more fun to listen to.
this is of course, just my opinion. But this an instrument like the piano, with such a huge range, there are many things you can try to introduce new colors...
Keep working, it's good!