Per the Review for Review thread:
You'll have to forgive the ol' rust when it comes to reviews, considering that I haven't done a review of a song in nearly 5 years, but I will try to lay out the critique in a structure manner.
Considering the genre of Drum and Bass, I expect the melody to be very minimum but on track, which this song was. The melody slowly fades in and out of the song, which is a nice touch for what I assume you were trying to achieve.
Oddly, I feel like the song used a lot of the synths that are packaged in FL Studio without any edits from the mixer, which helps mitigate some of the issue that prepackaged drums and percussion comes with in FL Studio. I would suggest in the future to work on using parametric EQ, some reverb, and other items to have the drums sound as authentic as possible.
Another issue that I had is that the bass is very basic in this song. It looks like you're either using a sub bass or something that is very low on frequency, which is not bad, but I think it's a little overbearing for a bass like this. Maybe personal bias is at work here, but for basses, I prefer them to be doing something during the song that makes them interesting. They don't have to stray from the path too much, but they can be doing something more than whole notes.
I think it's a solid drum and bass song, and it looks like you have a lot of potential with the songs that you are creating. Just work on some of the parts to make them more interesting, and you'll become better at it!