Pretty good
Well so far this seems to be a decent piece of work anyways and I like what you have managed to do. For a test piece it also kind of feels like it would go well in a city level where you don't know if the area is safe or not. Can also kind of see Rainbow Dash doing stuff to this song.
The drums are very simple and clear here so that works out well for people hearing it. The wubs and wobbles sound pretty nice as well I think and seem like they would go well providing they are remixing something cool.
Overall, not bad for practice.