Nice work! Of course, everyone can improve, but that is a great start.

However, I very strongly recommend learning an instrument such as Piano, Guitar, etc to get some music knowledge and talent. Once you get the hang of it, upload your work and go from there with editing and such. Really, if you want to go anywhere with Music and/or SFX anywhere, you've got to have some of your own work, that you yourself created instead of using programs' base loops and rearranging them. That's the difference between an amateur messing around with the loops and an upcoming professional music artist or editor. Not professional in the sense that you are the next worlds greatest musician, but somewhat capable of producing your own tracks with a little help from program loops then, evolving into being able to make your own tracks without any using any loops from programs to assist your tracks.

That's what a true SFX/Music Artist should, and does do.
Best of luck! ~TS