Don't be so hard on yourself dude! I know what it's like, I quit for 9 years and getting back into it can be tough. I can tell you that you need to RELAAAAAAX, and slow down a little. Everything just looks forced (understandable). At your beginning stance, bring your elbow back to your side, push the ball forward as you take your first step, and let your arm swing freely. IT looks like you muscle your backswing, which will cause you to yank the ball left of your target. So free your swing, and don't try to throw it so hard. Your arm should be like a pendulum, and you don't want to give the ball push until it's passing your sliding foot. Also, like coachjim said, you should be closer to the foul line at the end of your approach. If I were coaching you, I would tell you to try moving up a step at the beginning of your approach, and remember, SLOW DOWN, you'd be amazed at how much more power you can get when you're not trying to muscle the ball. A little practice and help from a coach or someone will make all the difference. Good luck!!