What to do next?
Well you may want to port your game to more than just Android and Windows Phone platforms. The biggest advantage of developing in C++ is the number of platforms one can reach. As such, Cocos2d-x supports a sleuth of platforms such as the ones listed next. I have provided links to a few tutorials that can help get you started with some of the unfamiliar/newer platforms:
iOS
Android
Windows Phone 8
Windows PC
Mac OS
Linux
Blackberry OS
Marmalade (cross-platform development tool for mobile, TV, and desktop)
Tizen (Linux-based operating system targeting mobile, in-vehicle infotainment, TV, PC, cameras, wearable computers, smart...