LCD wont print

So my serial LCD from sparkfun is connected to the boarduino, and it is turning on, and the brightness is changing as told in the program, but nothing would print out on the screen. I am using Serial.print() command to do this. Can anyone figure out what the problem might be. Thanks for the help

How did you connect it ?

Turns out the contrast was screwed up, so i got it fixed. Thanks for the help anyway