If you have enjoyed the theme and are registered on the site, please mark the little heart, it helps a lot in publicizing the theme UvU
If you are looking to create your own 3ds themes, use this editor
https://beelzy.gitlab.io/kame-editor/ , the best theme editor available to date.
Folder texture - Fusion of checkered racing flag with star cup emblem.
Border texture, based on the game's go-kart tires, along with the golden part in the middle of the tire.
Editable Textures -
https://gbatemp.net/threads/custom-theme-thread.377399/page-360#post-8922916
Note: If you do not have Photoshop, use this application to edit the .psd files, he is free.
Allows you to edit all available layers in the photoshop psd file.
https://krita.org/en/download/krita-desktop/