For improving Fluidity:

 

Do you play by ear? I recommend you try it. I found that my fluidity went up greatly when I started playing by ear. Or in other words, without any music, sit down and play the melody to some songs that are very familiar to you. Add some harmony as appropriate. This should be music that you have not previously played from a printed page.

 

Since I started learning to play by ear, the music I play from a printed sheet sounds better. My fingers just seem to anticipate where the next note is going to be, even if my eyes haven't quite caught up. You don't have to become an expert at playing by ear, but if you practice until you can do it a little bit, it will greatly improve your sight reading capabilities!