CC Particle World: Is it possible to tilt producer so it faces AT you? Instead of particles falling down, they're blowing at you?

I just want to create rain in my scene.

But my background is a painting I made, drawn in 3-point perspective, with the impression that you’re looking slightly upward toward the sky.

When using the particle world effect, I want the rain to look like lines that are falling, but it appears they’re sort of radiating outward. For example, the rain particles toward the center appear vertical, but as you look closer to the edges of the screen, the particles should be more angled. So the entire rain scene is sort of cone-shaped.