My problems with "th" sound w/ audio of me speaking

I've been trying to correct my "th" sounds recently. I used to say "d" or "f" depending on the voiced or voiceless "th". I recorded me saying "th"s here.

http://www.mediafire.com/?5s9tbjt9r9498uh

This is the passage I read:

"My brother and I drive each other crazy. Even though he is almost 30 years old, he likes to play pranks on me all the time. Last summer he glued feathers onto my yellow bathing suit while I was asleep on the beach. Another time, he told me he gave away $300 worth of my new clothes to charity. I had to take deep breaths to keep myself calm each time. "

I feel I'm saying "th"s too plosively. Not sure if that's true though.

Please give me some comments on my th pronounciation or if I'm pronouncing other words wrongly.

Thank you so much!