its a fine piece
i would definitely say that metroid is so popular that there are an incredible number of remixes out. This one was good considering it competes with so many other ones. You could improve the song possibly by using the main theme in more ways, instead of making the theme the background you could bring it out as the focus and add some variety to the sounds in it. I really liked the song and I think you did a good job on it. Good work.