It's only natural to be concerned with your appearance, especially with someone you like. We all want to put our best foot forward and leave nothing to chance.
Personally, I hate
it when women play hard to get but every guy is different. Part of attracting someone is figuring out what the other person likes and doesn't like. I'm sure many of us wish it could be as easy as asking the person, and I'm sure there are some like this, but most of the time, it's not. Everything seems to be going well for you so far though.