You'd probably be best served by going to the DIY forum. There are a lot of how-to threads and guidance as to which flavors work best at which percentage, what types of flavors to avoid, how to achieve sweetness, etc. Prepare to spend a couple hours reading. Keep in mind that while it seems like it should be easy, it will likely a while, and a few dollars down the drain
until you produce something that's even vapable, let alone as delicious as what some of our vendors provide.
DIY e-liquid