Also just wanted to add, that when someone is kind of checking you out, that might really be all there is too it. I notice when someone is attractive to me, but it doesn't mean I want to pick them up or anything either. Might even just be looking at someone cool shirt or something else.

You could definitely try approaching them, as others suggested. Women don't do it all that often and I think men kind of like it when they do. I wouldn't worry so much about looks because attractiveness is very subjective anyways. What one person finds attractive another may not and vice versa. Just be yourself, look how you want to look and be confident that you are a good person with many good traits.

You might want to work on your own inner strength but I don't really think changing your looks is necessary. Don't let people place expectations on you or your looks, you are the one who is in charge of that.