Correct. I do it for my game, so let me show you what I use.
It's not super fancy, but it's pretty smooth. Picture zooms and fades in, hangs for two seconds, fades out, battle starts.
Here's an example of the image itself:
It's not difficult to remove the face from an image like that, so feel free to work from it as a template. Just fill the top/bottom bars to your color choice, recolor the background, fill the rush lines to your color choice after that, and then paste the face on top. I've opted not to do it, but you could also put a player face on the left.