Hi, I'm trying to take a shape with fill and make it travel across the screen fading into full fill and have a trail after it. Its for a company logo motion graphic. I know how to add position and scale key frames and i tried the echo effect and gradients but it still doesn't look how I want. Do you know any tutorials I can watch that have that effect?
To use the echo effect you have to pre-compose your movement layers and then apply Echo to the Pre-comp.
A dot is a dot is a dot... Your initial attempts using Echo would no doubt work. You are just trying to do everything in one layer, which on the other hand will of course almost never work. Use multiple layers, cross-fade them. Pre-compose if necessary.