Knowing you suck is the 1st step to getting better.
1. your track should be a figure 8 so you practice both right and left turns.
2. you are steering with the front wheel too much. try and use as much body language as you can to move the bike in the direction you want without losing momentum....trust the bike a little.. crashing sucks but thats how you learn as well.
3. You keep looking down in front of you, look ahead at the exit of the turn. here's what I tell my kid and his friends at lesson time. "Look ahead and move ahead, Look down and you fall down."
4 keep that outside elbow up. you drop it into and out of the turn. learn to over grip your handlebars in the turns to help with the transition.
I always watched the races and how the pro's were turning in certain sections. Good people to watch for smoothness and corner speed are Carmichael, Dungey, Windham**, McGrath, Short and if you can find them old vids of Bavid Bailey especially on the 125 or 500.... quite possibly the smoothest and fastest of any riders I have seen in my life and thats where Carmichael got his smoothness from I believe.
Good luck and keep up the practice....
PS your bike needs to be jetted or the silencer repacked. It no sounded crisp.