Thanks for the advice Brian, but I actually decided to use a path to make it look like a doctor is writing it, like a prescription. Now I just need a good “Handwriting” font.
You can try tplaying around with Particle Playground and Gaussian Blur. I’ve made different types of smoke and steam using these, and of course, keyframing the edge of the cannon from PP.
Also, if this doesn’t help, you might try looking in to the program Particle Illusion. Its $400 I think. You can find it at https://www.wondertouch.com
Thanks guys. It’s not my copy of FCP, and I usually use the Adobe Creative Suite, and if you knew how cluttered the workspace was, you’d know how hard it was to see the manual. Anyway, thanks again!