I have one too which looks like a bald spot (I have extremely white skin, especially my scalp, and darker hair. contrast is not my friend up there.)
what I did - I started the part of my hair directly on the cowlick, dragging it straight to the hairline. this way the cowlick simply looks like the end of a part, and not a random bald spot. the part in my case is way more to the side than I've ever worn, but whatever works. I was very frustrated and depressed over this cowlick, because I have thin, fine hair with not much volume and I really don't need anyone to think I am going bald.