I look a bit different, mainly because when I wear makeup it tends to be colorful and/or dramatic. I just look younger without makeup. I don't have a problem going out without it, or with just mascara or something.
Nope. I do my makeup as natural as possible. Of course there are going to be slight differences, i.e. my lashes appear a bit more darker/fuller due to my mascara and how I do my eyeshadow or my eyes are bigger due to my contacts and make up. Other than that, I pretty much the same.
I think my eyes look more striking if I use eyeliner, but that's just about it.
I usually wear light make up for everyday purposes, like mascara, concealer, blush, ect. But when I have an important day I always wear eye liner. People always tell me I look good without it but I still wear it on occasion. It really depends on how much make-up you put on. There is such a thing as too much make-up. ;)