I like the minimalist approach you took. The music is understated which can sometimes be far more effective than something overdone; less is more. The chords are quite low. You could try revoicing them (as mentioned in another comment), bringing the entire chord up an octave (which would be okay since the melody is so high), or even "flip" the registers of the melody and chords so the chords are higher than the melody.
Overall good job for a beginning attempt!