I suggest adding a little tube or nozzle right before the long fall to better direct the turtle's fall. That will prevent the turtle from drifting off to one side and hitting the black lines (as happened to me--twice).
Often, the long fall will kill the player, which is very bad. Personally, I'd recommend removing it entirely as it's annoying, and just think of a different title for the level.
Often, the long fall will kill the player, which is very bad. Personally, I'd recommend removing it entirely as it's annoying, and just think of a different title for the level.