I agree with bringing the drums out in RB89. You could also bring those hi hats up too to help them be more crisp. I would also suggest some change ups.
RB68, I like it, but it needs a little work. It seemed like it was leading up to something in the intro but then the record player just messed up and looped itself. Has potential to be straight heat but it's lacking just a little.
RB64, that hit me. I like that. Kind of has a Santana feel, but it needs more because the drums aren't mixing well with that melody. Maybe adding another instrument melody combo might help that. Get it fuller, but not too full
RB59, that's money right there. Add in a woodblock pattern and biring up that snare for a sure hit. Everything that I commented on the other beats you did on this one so I know you've got it in you (change ups, layering, better mixing with it). Do more stuff like this and you're killin' em. Guaranteed.
Welcome to the forum and stay up,
Fiev