@lmrush I also have the iPad Pro 12.9 and have really liked it so far! Most of the issues for me has just been the finding what style I like to render color in digitally.
Another thing to consider: While I really like the Procreate app everyone is mentioning, there is also an app called Astropad. What that does is mirror your desktop/laptops screen on to your iPad (only for iOS) and allows your to use your computer's Adobe programs with your iPad screen with the Pencil's pressure sensitivity and all. The app can work with a USB cord or over WiFi.
Check it out here. http://astropad.com/