1. Practice clipping in from a standing start.
2. Yelling "wide" in a Masters field will get a lot of strange looks. If you have to say anything, say "outside" or "hup".
3. Your "bridge" was not a bridge. You towed the field to the break. If you are going to bridge, you gotta go all out from a strategic position, unless you are just faster than everyone else, which it appears that you are not.
4. Your sphere is huge. Work on that in group rides and more of these practice races. You gotta learn to race tight and close in Masters.
5. You corner very tentatively, getting gapped almost every time, and these corners are not technical at all. Practice.
6. If you go OTF, and you are not blocking for a teammate, then you gotta commit. That means pull. You hung that poor guy out to dry. If you don't have the juice to do your share then don't go OTF.
7. When "Kurt" went, you were right there in a great place to get away, but you accelerated too slowly, once again pulling the field up. Kurt realized this and sat up. It wasn't like they ran out of gas, you neutralized their effort and wasted your own.
8. At the end you made a dangerous move by backing off too hard. If your effort was intended to be a leadout, it didn't work. If you are going to either drive the field or lead out the field, then save a little bit for when you plan on shutting it down, and ease off your speed. It looked to me like you put your brakes on. That's dangerous. If you're so totally gassed that you can't back off nicely, at least put your hand up.

Good luck next time, and please change the music. It sounded like a pron flick.