Over half a year later, I've come back with another theme for the 3DS based off of Millie.

Mega link if you want to DL: Mega Download

Theme Plaza coming "soon." The mods take months to approve entries.

Other Theme: Themeplaza

A PlayStation Vita version is possible, but theme creation for the Vita is a bit more complicated.

If you end up putting this on your system, please do send me a pic! I would be overjoyed!