My setup is dog shit and it needs to change if I'm going to improve. I feel like I've been drawing on an etch-a-sketch for like 15 years. My drawings on paper don't have these problems, but the reason I like digital painting is so I can transform things (flip, stretch, cut and paste), adjust colors with sliders, have an undo button, etc.
I'm using --first of all-- gimp 2.8 which is what I've been using since like 2008, and I have the cheapest intuous wacom tablet I could find at best buy around 2011. I don't know if it's the tablet or the software but I just have no control over what I'm drawing. In order to compensate for the complete lack of control over where the cursor goes, I zoom in like crazy but I'm tired of it. I'm an adult, I'm not poor anymore, I want the kind of screen I can draw on with minimal or negligible parallax, and software that allows me to draw a smooth line and to actually have pressure sensitivity.