The "gooooooal" is perfect! The goal shake is way too much though =) I guess shaking the goals a few pixels backwards and quickly back to position should be enough.
Another small detail I would change would be: the "GOAL FRANCE!" text should only come up when the announcer starts screaming "goooooooooalllllllll" (Because the shout, correctly, only comes a fraction of a second after the ball enters the goal) The text should come in sync with the shout and not in the same frame the goal crosses the line like it is now.
I would also add a second "thwack" sound at the moment the ball hits the net. That way the feeling of scoring is enhanced... like : Shoot > "Thwack" > "GOOOOOOOOOOOOOALLLLLLLL" (is like a three step satisfying sequence with its own rythm)
Another bit of polish would be when you shoot and hit the post or very close to the goal, there should be a "AHHHH!" crowd sound.