1) List out your favorite pokemon by type.
2) Provide a large enough image to serve as a background. Keep in mind that it has to be big enough to fill the dimensions of the template or at least be stretched to fit with minimal quality loss.
3) I will reply to you with a completed template using your background image and TCG art for the mons. Image source:
https://pkmncards.com/Of course you can do all that yourself if you feel like it, or post images generated from the typical websites