I select the spline tool and draw a shape by click, click, click, click, double-click to close the shape. I now have four points closed curve with handles on all four points. When I drag any of the handles the four points on the curve stay fixed but all the rest of the curve moves. How can get more control so that some sections between the points don't change? I want to be able to play with the handles of one point and only change the shape of the curve passing through that point, not the whole closed shape.
The reason I am asking is that I am trying to draw a spline over an inserted photo. After I've traced a spline over a shape I try to refine the spline to better follow the shape of the picture but I find that pulling handles in one section is throwing off the spline in a different area. Are there any good tutorials out there that cover this specific issue of controlling spines. I've watched tutorials about splines but they don't seem to address this.