Research For Particle

The main particle that I need for my level is a rocket exhaust smoke particle. The first thing that I decided on was that I wanted the particle to look something like this:

I want the smoke to be pretty straight down until it hits the ground and fans out. I do however, not want to include the fire in my particle. 

My level is a kind of cheesy cartoon pinball level, so I want to try and make it look like that. I decided to go with cel shading for my smoke material.

Here are a couple tutorials that I will be using to create this particle:

eat3D smoke tutorial

3D buzz tutorial

UDK smoke tutorial