Some points to address
There should be more fills between musical statements. It felt to mechanical because of all the pauses between melody. Try throwing in some minor chords to spice it up a bit.
Also, ditch the drum machine, it ruins the flowing feel of the song. If you need to use a drum machine try inserting drum fills as well because that ruined the effect.
Please contact me if you would like to use this in a project. We can discuss the details.