I think the musicianship/writing is really solid, however the mixing (in my opinion) needs some work. It's very muddy and a lot of things blur together. I know it's a WIP so I'm not trying to judge too hard so forgive me if what I'm about to suggest you're already aware of. (I don't know how long you've been using Fl Studios.
1. The drums really seem far in the background. Only really the cymbals standout. The kick and snare aren't really seperated. Almost they're gain-staged much lower in the mix. I personally like a beefy kick to stand out and a snappy snare. Are the drums parallel compressed? They could really help things stand out. Several youtube tutorials on it if you need to know how.
2. Doesn't seem to be a lot of low end. Is there bass recorded yet? Would definitely like to hear some boomy bass and tight low in, to really round out the mix.
3. The guitars aren't really "clear". I can make out certain riffs and notes, and from what I'm hearing, it sounds like you're writing is really good. I certainly like the structure so far and the high energy of the song. But really wanna hear the guitar (and for that matter each separate instrument) cutting through the mix a bit better.
For a WIP, this is a good start. I would love to hear this as a final mix/master! Keep it up!