Dude, you have a voice! Not bad! I actually recognized the song. You frankly sing it better than anyone I've previously heard sing it. Keep it up!
I happen to believe that martial arts and music are very important cousins. From the music you can learn choreography, style, personal touch, and eventually even the ability to ad lib.
Your choreography from 7:03 on is great fun. I see the Shinjo touch to it - martial moves that come from Kenyukai yakusoku kumite. I also see some jiujitsu (aikido) mixed in. It was all great eye candy, and very well executed.
The wall climb at 7:16 made me chuckle. Great stuff!
Keep up this kind of work, and film it all. I wish cameras were cheap back when I taught at UVa. I'd make my black belts do personalized demos at the end of every academic semester. All their work - good, bad, and just entertaining - is lost. Yours will live on.