i hate tuts v.v i'm sorry D:
my personal take on tuts is that you're just copying shtuffs thats been done, you dont learn anything from it... maybe thats just me tho...

for me i just think of a flashlight. when someone does that creepy laugh with the flashlight under their face, think of the shadows. the light hits everything thats facing down (like the bottom of your nose) and everything facing up (like the top of your nose) has a shadow on it. in your render, the light is coming from the two ball thingies. look at the shadows on his face, see how the left side is shaded, but the right side is lit up? its cause of the origin of light, which is coming from the two balls. hmmm does that make sense? like at all??