An interesting first attempt.
Perusing the ol' DnB section here, and I find this. I will say, for a first attempt, at least you have the style in mind, and understand how Drum and Bass sounds like, and is supposed to sound like (in terms of the beat), as for the melodic themes, they're up to interpretation.
But, now that you have the focus of how it 'sounds' like, now you must develop your style and your focus of genre, if not a wide range of them to incorporate into your style and songs. Once that's done, then you can focus on the actual mix.
But that's besides the point and for future reference. Onto the now:
This track is... interesting. Super heavy bass drum with a flimsy snare (to be frank) and some over-shadowed hats. There's the basis for the drum kit, for sure, You have that at least.
The melodic lines are quite cool, I think. They mostly drive the song forward, with the raging Low-Fi Bass sort of chiming in every now and then. Good accompaniment, old chap. Not much else besides these few things that make up your song.
I will say, the end is.. random XD. I would have rather heard this loop than hear something very out of place occurring at the end of the track, but it adds some flair and flavor though!
For a first attempt, a job well done. I'll keep my eye on you.
~IZK
(P.S. - This is better than my first attempt, believe me.)