Nice :)
Well tbh this being you only cutting vocals from the original mp3, its a pretty good job... the reason im giving an 8/10 is because well, the cuts could've been more in rythm and there are just some slight mixing/mastering errors, but not any huge errors :)
The vocals: I would advice you to give them more of a "theme", so that the listener has something to hang his coat on. You can have "wild ride" bridges, but as a whole song it just doesnt work. So my tip here would be for you to mark up one spot of the vocals, and somehow repeat them, and build them throughout the song :)
The mastering/mixing: The hihats are a little too dominant, here also i would advice you to utilize simple rythms to make the beat, simply more CATCHY.
The saw (lead with the melody) is a little loud, and drenched in reeverb and delay, as a result it gets ducked behind the beat alot. And doesnt enhance the song, but just dig it further in.
Everything other than that is good really, i would just advice you to first pay attention to your beat, and make sure everything there flows well, nothing is too dominant and nothing clips. After that, add the bass, and make sure it lays the foundation for the song, by enhancing the 4x4 kick :) AFTER THAT, you add your melodies, your details, and your vocals.
In the future, also go easy on reeverb, rather use a little more delay (and set the time on the delay according to the rythm in your song :) (4x4 - time on delay = 4.)
Beat as a whole: REALLY nice intro, you teas the main beat alot, but that FL preset FX, NEVER AGAIN ;) Way to many people use FL for you to be using ANY FL preset! :) Just, go easy on reeverb in the future, that will really raise your quality to new levels...
And to finish this off... in the future, when you want an acapella, just PM me or something, i have liturally every acapella known to man... more than often studio recordings as well, filtered are horrible!
8/10
4/5
Good work ;)
-JC