Unfortunately, env_steam comes out in a cone. I can't control the base size except by increasing particle size and in general it just doesn't work here. Duplicating it makes my TF2 crash, also! So that's neat.
I think I really will have to make a particle system, but so far my attempts to understand tutorials are futile. I am having a really hard time learning to use the editor when all the tutorials are like "Screw knowing what anything is! This is how you make a fucking fireball!"
hhhhh