Pretty good man, I'm not a huge fan of some of the tracks played, but excellent work for only 4 months. You'll probably find that progressing from where you are now to like, Paul van Dyk level will be extremely difficult, but it's a lot of fun trying anyways =)

A couple of suggestions, adjust your gains and EQs when doing long mixes. When the next track starts to predominantly come in, turn the bass on the previous track to about half or so gradually, same with the midrange. That will eliminate alot of the chunkiness in the mixing. Your beatmatching is good, I think you just need to practice your mixing skills a little more. It takes a while to develop a really good feel for it.

Overall, excellent work, keep it up.