Welcome to DA! I saw your shot of Istanbul at night and had to stop by and look through the rest of your work. What kind of camera do you use?
And don't concern yourself with trying to be as colorful or as good as the other people here on DA. Take pictures for yourself first, then show them to other people. Getting stressed out about trying to be as good or popular as the photographers you see on the top favorites will get you nowhere. Do what you *want* to do within the limits of what you *can* do.