I have a Wacom Graphire 3, , and my lines are on photoshop, and photoshop only. For some reason, it turns sharply when I draw a curve. It is very difficult for me to draw a line smoothly and only works when I'm using Corel Painter.
If you had "Snap to Line" or "Snap to Grid" that is available in the View menu, this would make this step so simple. So if you go into one of those and follow self help, this will make your lines smooth.
If you can't find a way to fix this, you can always use a tutorial. I can type in a search and find hundred of them that can help you with your problem.
Linear Mode
