There are several things I have to note:
1: I think it would be a good thing if you put in your description what your thought process was when you made this piece. If you do that, it would allow me to provide better feedback, possibly a more accurate rating, and I could judge based more on how well your intent came across rather than just by my own taste.
2: I'm curious why you named this piece "Spike".
3: Why did you pick the thumbnail artwork you did? It's difficult to see the purpose behind using the image you did.
If you're getting your feet wet in creating music, I think it's at least a good idea to put some thought into what you are trying to do instead of just messing around not having a clue (not saying you don't have a clue, just making a comparison). From my experience, the more focused the piece, the better the piece overall.
Right now, what you've got is a good start, particularly in the way you've mixed the song. I just think it needs a bit of work.
I hope this review helps. Good luck. :)
More info about how I review music here: https://codefreq.newgrounds.com/news/post/1089806