if this is your first time, this is great..
suggestions:

bassline if you could. nothing too fancy.. but i'm guessing that if this your first time sampling, you usually play stuff out?

if so, playing a bassline (if you have the tools to do so) would be a good look.

the drums seem kind of garish and sore thumbish, they dont really blend with the track imo.. some reverb to give them some wash would do good for them... and maybe a hat in there to kinda hold it all together. oh and the the drum loop gets tedious after a few turns, try dropping out a snare or a kick here or there, giving it some change.

sounds good though.