I like the 2nd one from the bottom and the last one, sorry i dont know your guys names, but the last one down the bottom i wasn't feeling the top part of the s and it could have looked fresher with markers or the shading better.The 2nd last one flowed nicely and i really liked the idea of the w with the squids legs but i didn't like the character in general but still.
Oh also, there is letter structure in mine and i counted 6 arrows and mostly all of them are getting rid of that dead space, in my opinion there was a reason for them being there and hey, it was a 20min freestyle what can i say, i'm not that great when it comes to freestyles.