For a first track, this shows a lot of awesome intuition and creative spark! Delightful rhythms on the outset, nice sense of build-up; bravo! Judging it as a track against the rest, I still think you did well to incorporate the theme, but for quality, you may want to check your reverb, and leave just a little more space between ideas. (If it makes you feel any better, this is far from my first attempt and I literally goofed the reverb on my track!! These things take time.)