Hey, I seen your message in the review req club.
When mixing, you're gonna want to make sure that
1) your levels aren't clipping (which they aren't here, so that's good)
2) you're gonna want to eliminate frequency overlap as much as possible. When two sounds being played at the same time, the frequencies that both share will have to compete with eachother. Too many frequencies overlapping makes a mix sound muddy.
3) have fun, play around with effects. At the end of the day, using a compressor isnt going to help you unless you know what it does, how it works, and what situations it would be helpful in!
You could live 100 hundred years and still be learning stuff, you'll never know everything about production, so keep that in mind, and keep learning! be curious, try to figure stuff out on your own, and when you can't, Professor Google knows all, or ask a friend, or shoot me a message etc... Keep at it, and eventually, you'll get to the point where you're able to say "yeah, I can mix". You'll always feel inadequate, as there's no such thing as a "perfect mix," but that's okay!
I think what you have here is solid, and all things considered, is probably a lot better than my 12th track was :p
Oh, also, I scouted you for the audio portal, which basically means your songs will get up on the main page when uploading them (so you'll get a lot more views)
Keep it up, I like what I hear so far :)