Apologies if this question has been answered or is naive. I am attempting to fill against a curve using two colors and am following these steps, all on a single layer.
Draw curve using color A (top color), antialiasing turned on.
Fill below curve using color B (bottom color), tolerance 84%.
Fill above curve using color A, tolerance 84%.
The result is still a bit more ragged than I'm hoping for. Am I going about this in the wrong way? Should I be working at a much higher resolution? The intended output is an 8.5 x 11 poster. Many thanks for any guidance or gentle criticism.