Help with MOTUC custom packaging

Posted in Custom Workstation

Hello everyone, I'm just looking for some answers regarding customs I've seen in the past with their own art. Specifically, the bubble insert for MOTUC that lists the character's name. The customs I've seen on here look really official and I'm wondering, since the custom inserts are so widespread, if there is some template for that green brick floating around or if everyone is just really good at Photoshop.

Also, any advice in general about printing card backs?