It's not perfect, but I couldn't find any custom / fake card templates that really met my standards, so I decided to make one.

This template comes in PSD format, and includes an instructional layer regarding the fonts and finer details.
Layers have been arranged so you should be able to create any card you like.

Many thanks to u/KntKoko for finding in-game resources.

Last Update / Fix: 21/09/2019

There may also be some colour errors, as I am colourblind.
Feel free to point out anything that could use fixing.

Dragon Ball & DBZ: Dokkan Battle © Akira Toriyama / Toei Animation / Akatsuki / Bandai Namco Entertainment.
Fanart of Caulifla & Kale below are by me.