On the off-chance that you have an excess of liquid for what the pasta could absorb and it's a little soupy, you can uncover the skillet, turn the heat to high, and let it come to a fast boil and allow some of the liquid to simply steam off (evaporate). However, note that as pasta sits it continues to absorb liquid so I'd be hesitant to get too carried away with this for fear of a dry dish later on, especially leftovers.