This is awesome for a first song! Here are a few musical tips:
1. Potentially keep the music in the same key signature? The drop switches what I believe seems to be F major before the drop to E major after the drop. If this is *intentional*, then I would definitely suggest having some sort of buildup that introduces the listener to the new key signature.
2. As the other reviewer (the only one at the time of this review) noted, this could really do with some more instruments. I would love to hear some pads or some strings.
3. Some notes sound better than others when mixed with other chords. In each time signature, there is an associated pentatonic scale: in your song, this would be F (low) G A C D F (high). Typically, these notes are good for melodies.
Overall it's a good start! Can't wait to hear some more from you— hopefully soon with the full version of FL Studio :)