Good First Try
Let me first note that this is not a statement to put you down in anyway, it is merely constructive criticism. The melody is pretty good, but it is too repetitive... Advice for your songs in the future is to change things up a bit, mess around with other chord progressions in that key instead to stick to the same bass line of A minor, F major, C major, G major. At least you added some change with messing around with the corresponding chords. But you are falling victim to the 4 chord song, which I myself have done, and it is fine to do so but you need to add variation. Hope this helped you a bit.