Game was fun! I love how you managed to add depth to the simple controls. Because turning left and right slows you down, experienced players can minimize the amount of turning they do and get a faster time. I liked the small touches - like the line that follows the player and the death animation.
If you keep working on the game, one thing I noticed is that the sound of going between flags is a little repetitive, you can try and randomize the pitch of the sound every time it plays, so it will sound a little different every time.
Good work!