The more you play with the scale, the more natural it will become. After a while you just start feeling the scale rather than thinking about the scale. Your fingers start to know if you should go up or down a half or whole step or if it is time to jump to the next string on their own. Explore them and have fun with them. Try listening to your favorite songs and find the scale they are using and mess around with your own melodies using that scale in the song. It helps to make a scale "feel" right and you're having fun while doing it. There is knowing theory and there is natural understanding. Both are keys to being better.

To really get to know the C Scale I recommend Bobby Howe's Double Stop tutorials http://www.guitartricks.com/lesson.php?input=14573&s_id=956