Hi Joshua,
I checked the beat, below what I think:
Brass - really weak sounding like a first found free VST plugin (no offence and doesn't mean for good plugins you have to pay), but here I would recommend some Kontakt libraries or Splice sounds. Also add some diversity to the arrangement, because this is one and the same pattern all over the beat
808 - I would change the sound as well, it doesn't have any impact
I think you made a good job with hi-hat pattern, it's cool and works good for this beat.
If you would like to check my beats please find them in my signature. I would appreciate if you would let me know what you think.