I often just look at the screen, because I can get my hands in the natural typing position just by touch, since the "F" and "J" keys have bumps on them to tell you which keys the are, and they are only two keys apart. If I'm having typo issues, such as typing a completely different character than I thought I was, I will look down to make sure I'm lined up correctly, and if I'm not, I move my hands in the direction necessary. Though I don't have to look down much to fix those issues now, since I've practically memorized where each key is on the keyboard.