I think/hope I write this way too, but it's not something I've tried to do. It's come very naturally. Someone reading both Major Crush and The Boys Next Door might see some similarities, but you could probably make a convincing argument that a different author had written each book (if you hid the cover). The settings, plots, heroines, and story goals are completely different. But the bottom line is that I wrote them almost two years apart. Different things had filtered into my brain in those two years, so my mindset automatically created a second book that wasn't a copy of the first.
Do you get the feeling you're repeating yourself from book 1 to book 2, or is every manuscript a completely new adventure?