LargeCube From Persistent level ?

https://fbcdn-sphotos-h-a.akamaihd.net/hphotos-ak-xpt1/v/t35.0-12/11296343_841582919265925_1322171761_o.jpg?oh=28214b4e4e2de754382d1f9c915fe11e&oe=555F899A&gda=1432333609_2d9d41a7ff58c46516fd3901c0f243fe

Plz someone can help me i need do this blueprint but i dont know how to create this LargeCube From Persistent level
ty for attention