I completely agree with Saiyan! The only way to know what is the right technique (for you) i to keep trying. It's a matter of experience and experience takes time to gather!

Never limit your creativity and never worry about bad drawings.

When you wish to create an effect, try whatever you can think, even if it seems a nonsense.

And finally, remember to also think 2D... Many great effects can be made very simple using composition and could be very hard (or long) to create in a single 3D scene.

Bye!!