1st track:
I like it, but I feel like you should change up the hi hats pattern, you have it pretty much the same all throughout the track.
and change up the pad/synth that's in the track maybe move up an octave or go up a few keys, it sounds a bit repetitive.
2nd track:
nice dude, I think the snare could be louder, crisper and more in your face. That would make this track bang with those 808's giving it that bounce. Samething with the hihats, you're not changing up the speed just keeping it one speed so change it up a bit go fast, slow, fast but that's just my opinion.