Any suggestions?

So, as November approaches, I am once again gearing up to write a novel in a month, and try to once again "win" at NaNoWriMo. This time around, I managed to generate an idea (the one some of you heard about involving the vampire who is a farmer - and no, it's not as bad as it sounds) and then reject it in favor of a more recent idea. (young adult, and not about vampires - but involving some scifi/fantasy elements, which is a bit different from the past two years, when I did realistic young adult).

Anyway, I am trying to envision what a certain character looks like, and I feel like there must be places on the internet where I can see the faces of a bunch of people (they don't need to be teenage faces - college faces are not that different from high school faces) and/or where I can easily manipulate faces in terms of things like skin tone and eye color.

Anyone know of any such resources? Because I looked around and I haven't found them.

Oh, and since I haven't posted for a while, things are good here. Lots of holidays.